A resistor and an inductor are connected in series to a battery. The time constant for the circuit represents the time required for the current to reach
A) 25% of the maximum current.
B) 100% of the maximum current.
C) 63% of the maximum current.
D) 37% of the maximum current.
E) 75% of the maximum current.

Question

Quizplus · Accepted Answer

The time constant for an RL (resistor-inductor) circuit is defined as the time it takes for the current to reach approximately 63% of its maximum value after the circuit is completed.

A Resistor and an Inductor Are Connected in Series to a Battery