
Medan Magnet
Presentation
•
Physics
•
10th - 12th Grade
•
Hard
Eko Sugiyanto
FREE Resource
5 Slides • 0 Questions
1
Medan Magnet
Physics 12
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Setelah mempelajari bab ini, kalian diharapkan mampu :
1. memformulasikan medan magnet dan gaya magnet,
2. menerapkan induksi magnetik dan gaya magnetik pada beberapa produk teknologi.
3
Medan Magnet di Sekitar Kawat Berarus
Hans Christian Oersted (1777 - 1851) fisikawan berkebangsaan Denmark. Setelah melakukan eksperimen cukup lama, pada tahun 1819 Oersted berhasil menemukan bahwa, ”Jika sebuah magnet jarum (kompas kecil) didekatkan pada suatu penghantar yang berarus listrik, magnet jarum akan menyimpang”.
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Aturan tangan kanan
Apabila arah ibu jari menyatakan arah aliran arus listrik, maka arah lipatan jari-jari yang lainnya menyatakan arah medan magnet.
5
Hukum Biot-Savart
Berbanding lurus dengan kuat arus listrik (i).
Berbanding lurus dengan panjang kawat (l).
Berbanding terbalik dengan kuadrat jarak antara titik P ke elemen kawat penghantar (r)
Sebanding dengan sinus sudut apit θ antara arah arus dengan garis hubung antara titik P ke elemen kawat penghantar.
Medan Magnet
Physics 12
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