A pure inductor is connected to an ac power supply.In this circuit,the current
A)leads the voltage by 90°.
B)is in phase with the voltage.
C)lags the voltage by 45°.
D)lags the voltage by 90°.
E)leads the voltage by 45°.

Question

Quizplus · Accepted Answer

A pure inductor has a reactance that opposes the flow of current in the circuit, which means that the current lags behind the voltage by 90°. This is because the voltage reaches its maximum value before the current does. Therefore, the correct choice is D, which says that the current lags the voltage by 90°.

A Pure Inductor Is Connected to an Ac Power Supply