In a pure inductive circuit the current ____.
A) lags the voltage by 45 degrees
B) lags the voltage by 90 degrees
C) leads the voltage by 45 degrees
D) leads the voltage by 90 degrees

Question

Quizplus · Accepted Answer

In a pure inductive circuit, the current lags the voltage by 90 degrees. This is due to the fact that in an inductor, the voltage leads the current by 90 degrees. Thus, when the voltage across the inductor reaches its maximum, the current is still at zero. As the voltage decreases, the current starts to increase, and when the voltage reaches zero, the current reaches its maximum. As the voltage becomes negative, the current starts to decrease, and when the voltage reaches its negative peak, the current is back to zero. Therefore, the current lags the voltage by 90 degrees in a pure inductive circuit.

In a Pure Inductive Circuit the Current ____