Question

In the case of inductor, the voltage?

(a) is in phase with the current

(b) lags behind the current by 90⁰

(c) leads the current by 90⁰

(d) is out of phase with the current

This question was addressed to me during an online exam.

This intriguing question comes from Phase Relation in a Pure Resistor in portion Introduction to Alternating Currents and Voltages of Network Theory

Answer 1

The correct option is (c) leads the current by 90⁰

The explanation: In the case of inductor, the voltage and current are out of phase. So, the voltage leads the current by 90⁰.