Alternating CurrentHard

Question

Which of the following quantities have zero average value over a cycle. If an inductor coil having some resistance is connected to an sinusoidal AC source.

Options

A.induced emf in the inductor
B.current
C.joule heat
D.magnetic energy stored in the inductor

Solution

Joule heat      I2rms R 
Energy in inducting coil 1/2 = LI2rms .

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