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日期:2025-04-26
Þ 磁通量的改變會使線圈的導線中引起. 一個感應電場,此電場可驅動自由. 電荷,就好像線圈中串接了一個無形. 的電池,其電動勢稱為感應電動勢。 * 法拉第定律. 1....
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日期:2025-04-26
1. 電磁感應與變壓器實驗. 目的:. 1.驗證法拉第定律(Faraday'sLaw)及楞次定律(
Lenz'sLaw)。 2.瞭解變壓器的基本運作原理 ......
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日期:2025-04-25
Michael Faraday formulated two laws on the basis of above experiments. These laws are called Faraday’s laws of electromagnetic induction. Faraday’s Laws Faraday’s First Law Any change in the magnetic field of a coil of wire will cause an emf to be induced...
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日期:2025-05-01
Transformers are used to change one ac voltage into another. They only work on alternating current, not direct current. At a hydro station for example, the voltage generated i … s quite low, and it is increased to a few kilo-volts by a transformer for sen...
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日期:2025-04-30
Transformer works on the principle of mutual induction of two coils or Faraday Law’s Of Electromagnetic induction. When current in the primary coil is changed the flux linked to the secondary coil also changes. Consequently an EMF is induced in the second...
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日期:2025-04-24
冷次定律. 法拉第定律 · 發電機 ... 冷次定律. 1.線圈內的磁場增強時,感應電流產生.
的新磁場與原磁場方向相反。 2.線圈內的 ......