1.

The expression for energy of an inductor ____________(a) ½ LI(b) L/2I(c) ½ L^2I(d) ½ LI^2This question was posed to me in an international level competition.Origin of the question is Inductor and Capacitor in section Inductance, Capacitance, and Mutual Inductance of Electric Circuits

Answer»

The correct answer is (d) ½ LI^2

Best EXPLANATION: E=∫p DT

=∫ LI*(dI/dt).dt

= L∫I dI

= ½ LI^2.



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