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The maximum magnetic energy stored in an inductor at any instance is?(a) E=LIm^2/2(b) E=LIm/2(c) E=LIm^2(d) E=LIm^2*2The question was asked during a job interview.This intriguing question originated from Oscillation of Energy at Resonance topic in chapter Resonance in AC Circuits of Basic Electrical Engineering

Answer»

The correct ANSWER is (a) E=LIm^2/2

To explain: At any instant, the magnetic energy STORED in an inductor is E=LIm^2/2, where IM is the maximum CURRENT and L is the value of the inductor.



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