物理教科書/楞次定律

楞次定律用於查詢因感應電動勢引起的電流的流動方向

它指出“電流的方向始終與其產生的原因相反”。

楞次定律也用於解釋能量守恆定律。

              When a magnet moves towards and away from the coil induce an e.m.f in it by change the flux linked of magnet and feeble current flows in the coil. Due to this magnetic field is produced which opposes the approaching movement of magnet. In this a work is done. At last the amount of work done is converted into heat energy which recycles the lenz's law. Hence lenz's law is also called law of conservation of energy.