A certain capacitor is charged to 10 V and then, at t = 0, allowed to discharge through a certain resistor. There will be a certain time before the voltage across the capacitor reaches 3.7 V. This time can be decreased for this circuit by increasing:
A) the size of the time constant.
B) the size of the resistor.
C) the size of the capacitor.
D) None of these choices.

Question

Quizplus · Accepted Answer

Increasing the size of the resistor or capacitor increases the time constant, which would increase the time it takes for the voltage to decrease to 3.7 V. Therefore, none of the choices will decrease the time.

A Certain Capacitor Is Charged to 10 V and Then