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 5 V.This time can be decreased for this circuit by increasing:
A)the size of the capacitor.
B)the size of the resistor.
C)the size of the time constant.
D)None of the above.

Question

Quizplus · Accepted Answer

The time it takes for the voltage to decrease is determined by the time constant (τ = RC). Increasing the size of the capacitor or resistor would increase the time constant, thus increasing the time to reach 5 V. Therefore, none of the options would decrease the time.

A Certain Capacitor Is Charged to 10 V and Then,at