Apa itu magnet dan bagaimana cara membuat magnet? Yuk, cari tahu lebih lengkap di artikel Fisika kelas 9 berikut ini!
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Kamu suka menaruh tempelan di pintu kulkas nggak sih? Tempelan kulkas ini lucu-lucu banget, ya! Biasanya juga sering dijadikan oleh-oleh, lho! Hayo, yang pintu kulkasnya penuh dengan tempelan kulkas, coba tunjuk tangan! Hahaha.
Kamu pernah mengira-ngira nggak sih, kenapa tempelan kulkas ini bisa menempel di pintu kulkas? Padahal ‘kan nggak ada lemnya ya. Nah, tempelan kulkas ini bisa menempel di pintu kulkasmu karena mereka ini punya magnet di bagian belakangnya.
Ada banyak benda di sekitar kita yang punya magnet. Selain tempelan pintu kulkas, benda-benda seperti kompas, hp, dan komputer kamu, ternyata juga memanfaatkan magnet. Bahkan, Bumi itu juga magnet, loh! Tapi jangan coba-coba nempelin Bumi ke kulkas ya hehehe.
Lucu-lucu ya, magnet kulkasnya! (Sumber: notonthehighstreet.com)
Mungkin waktu kamu melihat contoh-contoh magnet ini, kamu mulai bertanya-tanya nih, gimana sih magnet itu bisa terbentuk? Bisa tidak ya magnet dibuat sendiri di rumah?
Nah sebenarnya, beberapa magnet itu terbentuk secara alami di bumi, tapi kebanyakan, magnet yang sering digunakan dalam kehidupan sehari-hari itu dibuat oleh manusia, dan tentunya kamu juga bisa buat magnet sendiri. Daripada penasaran, yuk langsung aja kita bahas tentang magnet dan cara membuat magnet! Gaskeun~~~
Apa itu Magnet?
Sebelum kita membahas cara membuat magnet, kita harus tahu dulu tentang magnet, dong. Kata ‘magnet’ berasal dari bahasa Yunani, yaitu magnítis líthos, yang berarti ‘batu dari Magnesia’. Magnet pertama kali digunakan pada abad ke-4 sebelum Masehi di Cina, dimana saat itu “lodestone” atau batu magnet pertama kali digunakan sebagai kompas.
Eh terus, magnet itu apa ya? Nah, magnet adalah suatu bahan yang dapat menghasilkan medan magnet dan dapat menimbulkan gejala kemagnetan, seperti menarik besi dan baja.
Suatu bahan dapat menghasilkan medan magnetnya sendiri ketika partikel magnet disejajarkan dengan arah yang sama, hingga medan magnet dari masing-masing partikel magnet bekerja sama dan bergabung untuk membuat medan magnet yang kuat. Kayak pepatah, teamwork makes the dream work :D.
Terus pasti kamu penasaran: “kenapa ya magnet cuma bisa narik beberapa jenis benda tertentu saja?” Untuk memahaminya, kita perlu tahu jenis benda berdasarkan sifat bahan yang dapat ditarik magnet. Ada 3 macam nih, di antaranya feromagnetik, paramagnetik, dan diamagnetik. Ayo kita bahas satu-persatu!
Jenis-Jenis Bahan Magnet
1. Bahan Feromagnetik
Bahan feromagnetik adalah materi atau bahan yang bisa ditarik kuat oleh magnet. Nah, bahan feromagnetik ini dapat mudah dimagnetisasi atau dijadikan magnet karena partikel-partikel magnet dapat disejajarkan dengan arah yang sama.
Contoh bahan feromagnetik adalah besi, baja, nikel, dan kobalt.
Kobalt, bahan yang digunakan untuk baterai mobil listrik. (Sumber: mobillistrik.net)
Baca Juga: Yuk, Ketahui Jenis-Jenis Magnet dan Sifat-Sifatnya!
2. Bahan Paramagnetik
Bahan paramagnetik adalah bahan atau materi yang juga dapat ditarik oleh magnet, akan tetapi efeknya lebih lemah dari bahan feromagnetik. Bahan paramagnetik ini tidak bisa dimagnetisasi atau dijadikan magnet secara permanen.
Contoh bahan paramagnetik adalah aluminium, tungsten, magnesium, dan litium.
Logam litium yang bisa digunakan sebagai bahan campuran untuk membuat pesawat luar angkasa. (Sumber: teknikmesinmanufaktur.blogspot.com)
3. Bahan Diamagnetik
Bahan diamagnetik merupakan bahan yang tidak dapat ditarik oleh magnet, sama halnya seperti bahan paramagnetik, bahan diamagnetik ini juga tidak bisa dimagnetisasi atau diubah menjadi magnet secara permanen.
Contoh bahan diamagnetik di antaranya ada perak, emas, tembaga, kayu, karet, plastik, dan kain.
Emas dan perak merupakan logam mulia. (Sumber: Getty images)
Nah, sekarang jadi lebih tahu ya kenapa magnet cuma bisa menarik benda-benda tertentu saja. Pada dasarnya, magnet dapat menarik kuat pada benda-benda dengan bahan feromagnetik, seperti besi dan baja.
Lalu, menarik lemah bahan paramagnetik, serta tidak dapat menarik bahan-bahan diamagnetik. Sehingga, bahan yang dapat dijadikan magnet adalah bahan feromagnetik. Oke langsung saja kita bahas cara membuat magnet ya!
Cara Membuat Magnet
Secara umum, ada tiga cara membuat magnet, yaitu dengan cara digosok, induksi, dan dialiri arus listrik (elektromagnetik). Let’s go kita bahas satu per satu~
1. Pembuatan Magnet dengan Cara Digosok
Cara pertama untuk membuat magnet adalah dengan menggosokan magnet. Apakah digosok seperti menggosok barcode di kupon undian? Hmm… konsep menggosoknya kurang lebih sama, sih.
Berikut bahan dan langkah jika kamu ingin membuat magnet dengan cara digosok:
Bahan:
- Magnet permanen
- Batang besi
Langkah-langkah:
- Pegang salah satu ujung magnet permanen dan letakkan pada bagian ujung batang besi.
- Gosokkan magnet tersebut dan batang besi dari satu ujung ke ujung lainnya secara berulang dalam satu arah.
- Lakukan langkah tersebut selama kurang lebih 5 menit.
Jadi, dengan menggosokkan batang besi berulang kali ke satu arah, menyebabkan partikel-partikel magnet secara perlahan mengarah ke arah yang sama, sehingga besi ini sudah menjadi magnet sementara.
Kalau sudah bersifat magnetik gitu, berarti dia sudah jadi magnet, ya? Yes, betul sekali! Oh iya, kamu harus ingat, kutub magnet yang dihasilkan pada magnet baru ini, pasti berlawanan dengan kutub magnet yang menggosoknya. Jangan lupa, ya!
Kalo sudah, sekarang coba kamu dekatkan batang besi yang sudah menjadi magnet ini ke besi yang lain. Ketarik nggak besinya? 😀
Baca Juga: Cara Menghilangkan Sifat Kemagnetan
2. Pembuatan Magnet dengan Cara Induksi
Cara membuat magnet berikutnya adalah induksi. Proses pembuatan magnet dengan cara induksi ini cukup sederhana, lho! Berikut bahan dan langkah jika kamu ingin membuat magnet dengan cara induksi:
Bahan:
- Magnet permanen
- Besi (misalnya paku)
Langkah-langkah:
- Dekatkan salah satu kutub magnet permanen pada bagian ujung paku yang ingin dijadikan magnet.
- Tunggu hingga masing-masing bagian ujung besi memiliki sifat magnet.
Dengan meletakkan bagian paku dan magnet permanen, dapat menyebabkan medan magnet yang kuat pada magnet permanen, sehingga memicu partikel magnet pada paku mengarah ke arah yang sama. Akibatnya, terbentuklah magnet sementara.
Walaupun paku pada awalnya bukanlah magnet, setelah diinduksi, akhirnya dapat menarik bahan-bahan magnetik. Bahkan, kamu bisa mengubah paku tersebut menjadi magnet permanen jika mendekatkan kedua magnet permanen dan paku secara terus-menerus selama beberapa bulan, tentunya kamu harus punya kesabaran ekstra, nih xixi~
3. Pembuatan Magnet dengan Cara Elektromagnet
Cara ketiga dalam membuat magnet, yaitu elektromagnet. Hah, maksudnya apa tuh? Buat magnetnya pakai listrik? Betul banget!
Proses pembuatan magnet dengan cara elektromagnet ini sangat mengandalkan arus listrik. Cara membuatnya cukup mudah, lho! Berikut bahan dan langkah jika kamu ingin membuat magnet dengan cara dialiri listrik (elektromagnetik):
Bahan:
- Besi panjang (misalnya paku)
- Baterai
- Kawat
Langkah-langkah:
- Lilitkan kawat di sepanjang potongan besi seperti pada gambar.
- Hubungkan bagian ujung kawat ke bagian ujung baterai untuk membuat rangkaian listrik.
Jadi, kamu tinggal melilitkan besi dengan kawat berarus listrik. Jangan lupa, kawatnya harus kamu hubungkan dengan baterai terlebih dahulu, ya. Nanti, susunan magnet elementer pada besi atau baja tersebut akan didapat dari arus DC baterai.
Tenang, susunan magnet elementernya sudah teratur, kok! Oh iya, arah kutub magnetnya bisa ditentukan lewat kaidah tangan kanan, lho. Apa sih, kaidah tangan kanan itu? Coba perhatikan gambar di bawah ini, yuk!
Eh, tapi kok rangkaian listrik bisa bikin magnet? Kan satunya listrik satunya magnet? Nah sebenarnya arus listrik juga dapat memancarkan medan magnet. Besi panjang yang dililit pakai kawat berarus listrik akan memagnetisasi besi tersebut. Kalau jumlah baterai semakin banyak, maka magnetnya akan jadi lebih kuat.
Baca Juga: Memahami Teori Kemagnetan Bumi dari Jarum Kompas
Itu lah pembahasan mengenai 3 cara membuat magnet, yaitu dengan menggosok, induksi, dan dialiri arus listrik (elektromagnetik). Jadi gimana, guys? Sudah paham kan cara membuat magnet yang melibatkan konsep fisika? Coba deh kamu bikin magnet sendiri biar bisa uji konsep ini, hehe.
Hayo, siapa yang mau membuat magnet setelah membaca artikel ini? Ternyata membuat magnet itu nggak susah, ya! Kamu mau mempelajari materi ini lebih lanjut tapi takut susah?
Tenang aja! Kamu bisa buat belajar jadi praktis dengan roboguruPlus. Tinggal foto soalnya, tanya kakak tutornya, belajar bareng sama kakak tutornya, lalu ta-da! Dapet deh jawaban pertanyaan yang sulit itu. Praktis banget, kan? Kuy, download sekarang!
Referensi:
nationalmaglab.org. (2014) Early Chinese Compass – 400BC. Available at: https://nationalmaglab.org/education/magnet-academy/history-of-electricity-magnetism/museum/early-chinese-compass (Accessed: 8 Desember 2022).
Widodo, T. et al. (2009) IPA Terpadu untuk SMP/MTs Kelas IX. Jakarta: Pusat Perbukuan, Departemen Pendidikan Nasional.
Sumber Gambar:
Foto ‘Kobalt’ [Daring]. Tautan: https://mobillistrik.net/nikel-dan-kobalt-hasil-tambang-yang-saat-ini-semakin-menjadi-incaran/ (Diakses pada 25 Januari 2023)
Foto ‘Logam Litium’ [Daring]. Tautan: https://teknikmesinmanufaktur.blogspot.com/2022/12/litium.html (Diakses pada 25 Januari 2023)
Foto ‘Logam Emas dan Perak’ [Daring]. Tautan: https://www.gettyimages.com/detail/photo/holding-a-handful-of-coal-royalty-free-image/530703778?adppopup=true (Diakses pada 25 Januari 2023)
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<h1 class="content-title">
3 Cara Membuat Magnet: Digosok, Induksi & Elektromagnetik | Fisika Kelas 9 </h1>
<div class="content-meta">
<p class="content-author"><a href="https://www.ruangguru.com/blog/author/bing-samudera-ibrahim" class="">Bing Samudera Ibrahim</a> </p>
<p class="content-info"><span>February 6, 2025 • </span> <span>7 minutes read</span></p>
<br />
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<p><img decoding="async" style="height: auto; max-width: 100%; width: 820px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Fisika%20Kelas%209%20-%20Cara%20Membuat%20Magnet_Header%20820%20x%20410.jpg" alt="Fisika Kelas 9 - Cara Membuat Magnet_Digosok_Induksi_Elektromagnetik" /></p>
<blockquote>
<p style="text-align: center;"><em>Apa itu magnet dan bagaimana cara membuat magnet? Yuk, cari tahu lebih lengkap di <a style="font-weight: bold;" href="https://www.ruangguru.com/blog/c/fisika/fisika-smp-kelas-9" rel="noopener">artikel Fisika kelas 9</a> berikut ini!</em></p>
</blockquote>
<p style="text-align: center;">—</p>
<p> </p>
<p style="text-align: justify;"><span style="background-color: transparent;">Kamu suka menaruh tempelan di pintu kulkas <em>nggak</em> <em>sih</em>? Tempelan kulkas ini lucu-lucu banget, ya! Biasanya juga sering dijadikan oleh-oleh, <em>lho!</em> Hayo, yang pintu kulkasnya penuh dengan tempelan kulkas, coba tunjuk tangan! Hahaha.</span></p>
<p style="text-align: justify;"><span style="background-color: transparent;"><span style="background-color: transparent;">Kamu pernah mengira-ngira <em>nggak</em> sih, kenapa tempelan kulkas ini bisa menempel di pintu kulkas? Padahal ‘<em>kan nggak</em> ada lemnya ya. <em>Nah</em>, tempelan kulkas ini bisa menempel di pintu kulkasmu karena mereka ini punya magnet di bagian belakangnya. </span></span></p>
<p style="text-align: justify;">Ada banyak benda di sekitar kita yang punya magnet. Selain tempelan pintu kulkas, benda-benda seperti kompas, hp, dan komputer kamu, ternyata juga memanfaatkan magnet. Bahkan, Bumi itu juga magnet, <em>loh</em>! Tapi jangan coba-coba <em>nempelin</em> Bumi ke kulkas ya hehehe.</p>
<p style="text-align: justify;"><span style="background-color: transparent;"><img decoding="async" style="width: 600px; display: block; margin-left: auto; margin-right: auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/original_toadstool-magnets.jpg" alt="3 Cara Membuat Magnet" width="600" /></span></p>
<p style="text-align: center;"><em><span style="background-color: transparent;"><span style="background-color: transparent;">Lucu-lucu ya, magnet kulkasnya! (Sumber: notonthehighstreet.com)</span></span></em></p>
<p> </p>
<p style="text-align: justify;">Mungkin waktu kamu melihat contoh-contoh magnet ini, kamu mulai bertanya-tanya nih, gimana sih magnet itu bisa terbentuk? Bisa tidak ya magnet dibuat sendiri di rumah?</p>
<p style="text-align: justify;">Nah sebenarnya, beberapa magnet itu terbentuk secara alami di bumi, tapi kebanyakan, magnet yang sering digunakan dalam kehidupan sehari-hari itu dibuat oleh manusia, dan tentunya kamu juga bisa buat magnet sendiri. Daripada penasaran, yuk langsung aja kita bahas tentang magnet dan cara membuat magnet! Gaskeun~~~</p>
<p> </p>
<h2 style="font-size: 20px;"><span style="font-size: 18pt;">Apa itu Magnet?</span></h2>
<p style="text-align: justify;">Sebelum kita membahas cara membuat magnet, kita harus tahu dulu tentang magnet, <em>dong</em>. Kata ‘magnet’ berasal dari bahasa Yunani, yaitu <strong><em>magnítis líthos</em></strong>, yang berarti ‘<strong>batu dari Magnesia</strong>’. Magnet pertama kali digunakan pada abad ke-4 sebelum Masehi di Cina, dimana saat itu “lodestone” atau batu magnet pertama kali digunakan sebagai kompas.</p>
<p style="text-align: justify;">Eh terus, magnet itu apa ya? Nah, magnet adalah suatu bahan yang dapat menghasilkan medan magnet dan dapat menimbulkan gejala kemagnetan, seperti menarik besi dan baja.</p>
<p style="text-align: justify;">Suatu bahan dapat menghasilkan medan magnetnya sendiri ketika partikel magnet disejajarkan dengan arah yang sama, hingga medan magnet dari masing-masing partikel magnet bekerja sama dan bergabung untuk membuat medan magnet yang kuat. Kayak pepatah, teamwork makes the dream work :D.</p>
<p><span style="background-color: transparent;"><img fetchpriority="high" decoding="async" style="height: auto; max-width: 100%; width: 401px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Ilustrasi%20benda%20yang%20merupakan%20magnet%20dan%20bukan%20magnet.png" alt="Ilustrasi benda yang merupakan magnet dan bukan magnet" width="401" height="333" /><br />
</span></p>
<p style="text-align: justify;">Terus pasti kamu penasaran: “kenapa ya magnet cuma bisa narik beberapa jenis benda tertentu saja?” Untuk memahaminya, kita perlu tahu jenis benda berdasarkan sifat bahan yang dapat ditarik magnet. Ada 3 macam nih, di antaranya feromagnetik, paramagnetik, dan diamagnetik. Ayo kita bahas satu-persatu!</p>
<p> </p>
<h2 style="font-size: 20px;"><span style="font-size: 18pt;">Jenis-Jenis Bahan Magnet</span></h2>
<h3 style="font-size: 16px;"><span style="font-size: 14pt;">1. Bahan Feromagnetik</span></h3>
<p style="text-align: justify;">Bahan feromagnetik adalah <strong>materi atau bahan yang bisa ditarik kuat oleh magnet</strong>. Nah, bahan feromagnetik ini dapat mudah dimagnetisasi atau dijadikan magnet karena partikel-partikel magnet dapat disejajarkan dengan arah yang sama.</p>
<p style="text-align: justify;">Contoh bahan feromagnetik adalah <span style="font-weight: bold;">besi, baja, nikel, dan kobalt</span>.</p>
<p style="text-align: justify;"><img decoding="async" style="height: auto; max-width: 100%; width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/gambar%20nikel%20dan%20kobalt%20-%20bahan%20ferromagnetik.jpg" alt="gambar nikel dan kobalt - bahan ferromagnetik" width="600" height="450" /></p>
<p style="text-align: center;"><em>Kobalt, bahan yang digunakan untuk baterai mobil listrik. (Sumber: mobillistrik.net)</em></p>
<p><strong>Baca Juga: <a href="/blog/mengenal-magnet-dan-sifatnya" rel="noopener">Yuk, Ketahui Jenis-Jenis Magnet dan Sifat-Sifatnya!</a></strong></p>
<p> </p>
<h3 style="font-size: 16px;"><span style="font-size: 14pt;">2. Bahan Paramagnetik</span></h3>
<p style="text-align: justify;">Bahan paramagnetik adalah <strong>bahan atau materi yang juga dapat ditarik oleh magnet, akan tetapi efeknya lebih lemah</strong> dari bahan feromagnetik. Bahan paramagnetik ini tidak bisa dimagnetisasi atau dijadikan magnet secara permanen.</p>
<p style="text-align: justify;">Contoh bahan paramagnetik adalah <span style="font-weight: bold;">aluminium, tungsten, magnesium, dan litium</span>.</p>
<p style="text-align: center;"><img decoding="async" style="height: auto; max-width: 100%; width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/litium%20-%20bahan%20ferromagnetik.jpg" alt="litium - bahan ferromagnetik" width="600" height="450" /></p>
<p style="text-align: center;"><em>Logam litium yang bisa digunakan sebagai bahan campuran untuk membuat pesawat luar angkasa. (Sumber: teknikmesinmanufaktur.blogspot.com)</em></p>
<p> </p>
<h3 style="font-size: 16px;"><span style="font-size: 14pt;">3. Bahan Diamagnetik</span></h3>
<p style="text-align: justify;">Bahan diamagnetik merupakan bahan yang <span style="font-weight: bold;">tidak dapat ditarik oleh magnet</span>, sama halnya seperti bahan paramagnetik, bahan diamagnetik ini juga tidak bisa dimagnetisasi atau diubah menjadi magnet secara permanen.</p>
<p style="text-align: justify;">Contoh bahan diamagnetik di antaranya ada <span style="font-weight: bold;">perak, emas, tembaga, kayu, karet, plastik, dan kain</span>.</p>
<p><img loading="lazy" decoding="async" style="height: auto; max-width: 100%; width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/emas%20dan%20perak%20-%20bahan%20diamagnetik.jpg" alt="emas dan perak - bahan diamagnetik" width="600" height="400" /></p>
<p style="text-align: center;"><em>Emas dan perak merupakan logam mulia. (Sumber: Getty images)</em></p>
<p> </p>
<p style="text-align: justify;"><em>Nah, </em>sekarang jadi lebih tahu ya kenapa magnet cuma bisa menarik benda-benda tertentu saja. Pada dasarnya, magnet dapat menarik kuat pada benda-benda dengan bahan feromagnetik, seperti besi dan baja.</p>
<p style="text-align: justify;">Lalu, menarik lemah bahan paramagnetik, serta tidak dapat menarik bahan-bahan diamagnetik. Sehingga, bahan yang dapat dijadikan magnet adalah bahan feromagnetik. Oke langsung saja kita bahas cara membuat magnet ya!</p>
<p> </p>
<h2 style="text-align: justify; font-size: 20px;"><span style="font-size: 18pt;">Cara Membuat Magnet</span></h2>
<p style="text-align: justify;">Secara umum, ada tiga cara membuat magnet, yaitu dengan cara digosok, induksi, dan dialiri arus listrik (elektromagnetik). <em>Let’s go</em> kita bahas satu per satu~</p>
<p><img loading="lazy" decoding="async" style="height: auto; max-width: 100%; width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Fisika%20Kelas%209%20-%20Cara%20Membuat%20Magnet_INF%201.jpg" alt="Fisika Kelas 9 - Cara Membuat Magnet_Digosok_Induksi_Elektromagnetik" width="600" height="900" /></p>
<p> </p>
<h3 style="font-size: 16px;"><span style="font-size: 14pt;">1. Pembuatan Magnet dengan Cara Digosok</span></h3>
<p style="text-align: justify;"><span style="background-color: transparent;">Cara pertama untuk membuat magnet adalah dengan menggosokan magnet. Apakah digosok seperti menggosok <em>barcode</em> di kupon undian? Hmm… konsep menggosoknya kurang lebih sama, sih. </span><span style="background-color: transparent;"> </span></p>
<p style="text-align: justify;"><span style="background-color: transparent;">Berikut bahan dan langkah jika kamu ingin membuat magnet dengan cara digosok:</span></p>
<p style="text-align: justify;"><strong>Bahan:</strong></p>
<ul>
<li aria-level="1">Magnet permanen</li>
<li aria-level="1">Batang besi</li>
</ul>
<p> </p>
<p style="text-align: justify;"><strong>Langkah-langkah:</strong></p>
<ol>
<li aria-level="1">Pegang salah satu ujung magnet permanen dan letakkan pada bagian ujung batang besi.</li>
<li aria-level="1">Gosokkan magnet tersebut dan batang besi dari satu ujung ke ujung lainnya secara berulang dalam satu arah.</li>
<li aria-level="1">Lakukan langkah tersebut selama kurang lebih 5 menit.</li>
</ol>
<p> </p>
<p style="text-align: justify;"><span style="background-color: transparent;">Jadi, dengan menggosokkan batang besi berulang kali ke satu arah, menyebabkan partikel-partikel magnet secara perlahan mengarah ke arah yang sama, sehingga besi ini sudah menjadi magnet sementara. </span></p>
<p style="text-align: justify;"><span style="background-color: transparent;">Kalau sudah bersifat magnetik gitu, berarti dia sudah jadi magnet, ya? <em>Yes</em>, betul sekali! Oh iya, kamu harus ingat, kutub magnet yang dihasilkan pada magnet baru ini, pasti berlawanan dengan kutub magnet yang menggosoknya. Jangan lupa, ya!</span></p>
<p style="text-align: justify;">Kalo sudah, sekarang coba kamu dekatkan batang besi yang sudah menjadi magnet ini ke besi yang lain. Ketarik <em>nggak </em>besinya? 😀</p>
<p style="text-align: justify; font-weight: bold;">Baca Juga: <a href="/blog/ipa-kelas-9-bagaimana-cara-menghilangkan-sifat-kemagnetan" rel="noopener">Cara Menghilangkan Sifat Kemagnetan</a></p>
<p> </p>
<h3 style="text-align: justify; font-size: 16px;"><span style="font-size: 14pt;">2. Pembuatan Magnet dengan Cara Induksi</span></h3>
<p style="text-align: justify;"><span style="background-color: transparent;">Cara membuat magnet berikutnya adalah induksi. Proses pembuatan magnet dengan cara induksi ini cukup sederhana, <em>lho!</em> <span style="background-color: transparent;">Berikut bahan dan langkah jika kamu ingin membuat magnet dengan cara induksi:</span></span></p>
<p style="text-align: justify;"><strong>Bahan:</strong></p>
<ul>
<li aria-level="1">Magnet permanen</li>
<li aria-level="1">Besi (misalnya paku)</li>
</ul>
<p> </p>
<p style="text-align: justify;"><strong>Langkah-langkah:</strong></p>
<ol>
<li aria-level="1">Dekatkan salah satu kutub magnet permanen pada bagian ujung paku yang ingin dijadikan magnet.</li>
<li aria-level="1">Tunggu hingga masing-masing bagian ujung besi memiliki sifat magnet.</li>
</ol>
<p> </p>
<p style="text-align: justify;">Dengan meletakkan bagian paku dan magnet permanen, dapat menyebabkan medan magnet yang kuat pada magnet permanen, sehingga memicu partikel magnet pada paku mengarah ke arah yang sama. Akibatnya, terbentuklah magnet sementara.</p>
<p style="text-align: justify;">Walaupun paku pada awalnya bukanlah magnet, setelah diinduksi, akhirnya dapat menarik bahan-bahan magnetik. Bahkan, kamu bisa mengubah paku tersebut menjadi magnet permanen jika mendekatkan kedua magnet permanen dan paku secara terus-menerus selama beberapa bulan, tentunya kamu harus punya kesabaran ekstra, nih xixi~</p>
<p> </p>
<h3 style="text-align: justify; font-size: 16px;"><span style="background-color: transparent; font-size: 14pt;">3. Pembuatan Magnet dengan Cara Elektromagnet</span></h3>
<p style="text-align: justify;">Cara ketiga dalam membuat magnet, yaitu elektromagnet. Hah, maksudnya apa tuh? Buat magnetnya pakai listrik? Betul banget!</p>
<p style="text-align: justify;">Proses pembuatan magnet dengan cara elektromagnet ini sangat mengandalkan arus listrik. Cara membuatnya cukup mudah, lho! <span style="background-color: transparent;"><span style="background-color: transparent;">Berikut bahan dan langkah jika kamu ingin membuat magnet dengan cara dialiri listrik (elektromagnetik):</span></span></p>
<p style="text-align: justify;"><strong>Bahan:</strong></p>
<ul>
<li aria-level="1">Besi panjang (misalnya paku)</li>
<li aria-level="1">Baterai</li>
<li aria-level="1">Kawat</li>
</ul>
<p> </p>
<p style="text-align: justify;"><strong>Langkah-langkah:</strong></p>
<ol>
<li aria-level="1">Lilitkan kawat di sepanjang potongan besi seperti pada gambar.</li>
<li aria-level="1">Hubungkan bagian ujung kawat ke bagian ujung baterai untuk membuat rangkaian listrik.</li>
</ol>
<p> </p>
<p style="text-align: justify;">Jadi, kamu tinggal melilitkan besi dengan kawat berarus listrik. Jangan lupa, kawatnya harus kamu hubungkan dengan baterai terlebih dahulu, ya. Nanti, susunan magnet elementer pada besi atau baja tersebut akan didapat dari arus DC baterai.</p>
<p style="text-align: justify;">Tenang, susunan magnet elementernya sudah teratur, kok! Oh iya, arah kutub magnetnya bisa ditentukan lewat kaidah tangan kanan, lho. Apa sih, kaidah tangan kanan itu? Coba perhatikan gambar di bawah ini, yuk!</p>
<p><img loading="lazy" decoding="async" style="height: auto; max-width: 100%; width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Fisika%20Kelas%209%20-%20Cara%20Membuat%20Magnet_INF%202.jpg" alt="Fisika Kelas 9 - Cara Membuat Magnet Elektromagnetik_Kaidah Tangan Kanan" width="600" height="400" /></p>
<p> </p>
<p style="text-align: justify;">Eh, tapi kok rangkaian listrik bisa bikin magnet? Kan satunya listrik satunya magnet? Nah sebenarnya arus listrik juga dapat memancarkan medan magnet. Besi panjang yang dililit pakai kawat berarus listrik akan memagnetisasi besi tersebut. Kalau jumlah baterai semakin banyak, maka magnetnya akan jadi lebih kuat.</p>
<p style="font-weight: bold;">Baca Juga: <a href="/blog/fisika-kelas-ix-teori-kemagnetan-bumi" rel="noopener">Memahami Teori Kemagnetan Bumi dari Jarum Kompas</a></p>
<p style="text-align: justify;">Itu lah pembahasan mengenai 3 cara membuat magnet, yaitu dengan menggosok, induksi, dan dialiri arus listrik (elektromagnetik). Jadi gimana, <em>guys</em>? Sudah paham kan cara membuat magnet yang melibatkan konsep fisika? Coba deh kamu bikin magnet sendiri biar bisa uji konsep ini, hehe.</p>
<p style="text-align: justify;">Hayo, siapa yang mau membuat magnet setelah membaca artikel ini? Ternyata membuat magnet itu <em>nggak</em> susah, ya! Kamu mau mempelajari materi ini lebih lanjut tapi takut susah?</p>
<p style="text-align: justify;">Tenang aja! Kamu bisa buat belajar jadi praktis dengan <a href="https://www.ruangguru.com/roboguruplus" target="_blank" rel="noopener"><span style="font-weight: bold;">roboguruPlus</span></a>. Tinggal foto soalnya, tanya kakak tutornya, belajar bareng sama kakak tutornya, lalu ta-da! Dapet deh jawaban pertanyaan yang sulit itu. Praktis banget, kan? Kuy, download sekarang!</p>
<p style="text-align: center;"><a class="rg-cta" style="text-align: center;" href="https://www.ruangguru.com/roboguruplus" target="_blank" rel="noopener"><img loading="lazy" decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/cta/a0a38c01-0a03-4469-8a8f-60dc108e3138.png" alt="IDN CTA Blog roboguru plus Ruangguru" width="820" height="200" /></a></p>
<p style="text-align: justify;"><strong>Referensi:</strong></p>
<p style="text-align: left;">nationalmaglab.org. (2014) <em>Early Chinese Compass – 400BC.</em> Available at: https://nationalmaglab.org/education/magnet-academy/history-of-electricity-magnetism/museum/early-chinese-compass (Accessed: 8 Desember 2022).</p>
<p>Widodo, T. et al. (2009) IPA Terpadu untuk SMP/MTs Kelas IX. Jakarta: Pusat Perbukuan, Departemen Pendidikan Nasional.</p>
<p style="font-weight: bold;">Sumber Gambar:</p>
<p style="text-align: left;">Foto ‘Kobalt’ [Daring]. Tautan: https://mobillistrik.net/nikel-dan-kobalt-hasil-tambang-yang-saat-ini-semakin-menjadi-incaran/ (Diakses pada 25 Januari 2023)</p>
<p style="text-align: left;">Foto ‘Logam Litium’ [Daring]. Tautan: https://teknikmesinmanufaktur.blogspot.com/2022/12/litium.html (Diakses pada 25 Januari 2023)</p>
<p style="text-align: left;">Foto ‘Logam Emas dan Perak’ [Daring]. Tautan: https://www.gettyimages.com/detail/photo/holding-a-handful-of-coal-royalty-free-image/530703778?adppopup=true (Diakses pada 25 Januari 2023)</p>
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<li><a href="https://www.ruangguru.com/promo">Promo Ruangguru</a></li>
<li><a href="https://ticketing.ruangguru.com/help?request_type_id=459" target="_blank">Vulnerability Report</a></li>
<li><a href="https://www.ruangguru.com/bantuan#layanan">Layanan Pengaduan</a></li>
<li><a href="https://www.ruangguru.com/terms-conditions">Syarat & Ketentuan</a></li>
<li><a href="https://www.ruangguru.com/privacy-policy">Kebijakan Privasi</a></li>
<li><a href="https://www.ruangguru.com/about-us">Tentang Kami</a></li>
<li><a href="https://www.ruangguru.com/contact-us">Kontak Kami</a></li>
<li><a href="https://www.ruangguru.com/press">Press Kit</a></li>
<li><a href="https://www.ruangguru.com/bantuan">Bantuan</a></li>
<li><a href="https://career.ruangguru.com/">Karier</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title">Produk Lainnya</p>
<ul type="none">
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</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title"> Coba GRATIS Aplikasi Ruangguru</p>
<div class="download-list">
<ul>
<li>
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</a>
</li>
<li>
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<img src="https://cdn-web-2.ruangguru.com/static/googleplay.png" loading="lazy" alt="Button Google Play Footer " />
</a>
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<img src="https://cdn-web-2.ruangguru.com/static/huawei.png" loading="lazy" alt="Button AppGallery Footer " />
</a>
</li>
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</div>
<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
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<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
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<picture>
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</picture>
</a>
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<picture>
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</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>