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Energy stored in an inductor is ________(a) LI(b) LI^2(c) LI/2(d) LI^2/2This question was addressed to me during an interview.My question comes from Basic Network Concepts in portion Circuit Elements and Kirchhoff’s Laws of Network Theory

Answer»

The CORRECT choice is (d) LI^2/2

The best explanation: V = L \(\frac{di}{DT}\)

DE = Vidt = L \(\frac{di}{dt} IDT\) = Lidt

E = \(\int_0^I dE = \int_0^I Lidt = \frac{1}{2} LI^2\).



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