An RL series circuit is connected to an ac generator with a maximum emf of 20 V. If the maximum potential difference across the resistor is 16 V, then the maximum potential difference across the inductor is:
A) 2 V
B) 4 V
C) 12 V
D) 25.6 V
E) 36 V

Question

Quizplus · Accepted Answer

The maximum potential difference across the inductor is equal to the maximum emf minus the maximum potential difference across the resistor. Therefore, the maximum potential difference across the inductor is 20 V - 16 V = 4 V.

An RL Series Circuit Is Connected to an Ac Generator