Lenz’s Law



Lenz’s law states that when an emf is generated by a change in magnetic flux  according to Faraday’s law,  the polarity of the induced emf is such, that it produces an current that’s magnetic field  opposes the change which produces it.

The negative sign used in Faraday’s law of electromagnetic induction, indicates that the induced emf ( ε ) and the change in magnetic flux  ( δΦB ) have opposite signs.

Where, ε = Induced emf

δΦB = change in magnetic flux

N = No of turns in coil




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