If both the resistance and the inductance in an LR series circuit are doubled the new inductive time constant will be:
A) twice the old
B) four times the old
C) half the old
D) one-fourth the old
E) unchanged

Question

Quizplus · Accepted Answer

The inductive time constant for an LR circuit is given by τ = L/R, where L is the inductance and R is the resistance. If both L and R are doubled, the ratio L/R remains unchanged, meaning the inductive time constant remains the same.

If Both the Resistance and the Inductance in an LR