Question

In case of purely capacitive circuit, average power = ____ and θ = _____

(a) 0, 0⁰

(b) 1, 0⁰

(c) 1, 90⁰

(d) 0, 90⁰

This question was posed to me by my college director while I was bunking the class.

My question is based upon Average Power topic in section Power and Power Factor of Network Theory

Answer 1

Correct answer is (d) 0, 90⁰

Easy explanation: In case of purely capacitive circuit, the phase angle between the voltage and current is zero that is θ=90⁰. Hence the average power = 0.