Lenz’s law helps one to gain knowledge of electromagnetic circuits and how they obey the third Newton’s law. Lenz’s law obeys the Newton law of motion and energy conservation. Lenz’s law is named after H.F.E Lenz in 1834.  In order to understand Lenz’s la, you must have a clear knowledge of Faraday’s law of induction.   Lenz’s law can be applied where A coil of a wire where the battery connects. Lenz’s law states that when emf is generated by a change in the magnetic flux, the polarity of induced emf is such. Lenz’s law applies to the concept of the stored magnetic energy and in electric generators.  Lenz’s law can also be used in the electromagnetic braking.

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