Question

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

• A. Induced emf in the inductor only
• B. Current only
• C. Both A and B
• D. Neither A nor B

Answer 1

Answer: (C)

Both A and B

$\to E=E_{o}Sinwt$

$\to I=I_{o}Sin(wt-\theta )$

$period=\frac{2\pi }{w}$

in both cases, I and E has zero avg value over a cycle