The time constant of an inductor is:
A) inversely proportional to the resistance in the circuit.
B) directly proportional to the inductance in the circuit.
C) the time required for voltage or current to increase to 63% or to decrease to 37%.
D) all of these.

Question

Quizplus · Accepted Answer

The time constant of an inductor is indeed inversely proportional to the resistance in the circuit, directly proportional to the inductance in the circuit, and defined as the time required for the current to reach 63% of its maximum value in a growing current scenario or to decrease to 37% in a decaying current scenario. Therefore, all the given statements are correct descriptions of the inductor's time constant.

The Time Constant of an Inductor Is