In a purely capacitive circuit the current:
A)leads the voltage by one-fourth of a cycle
B)leads the voltage by one-half of a cycle
C)lags the voltage by one-fourth of a cycle
D)lags the voltage by one-half of a cycle
E)is in phase with the potential difference across the plates

Question

Quizplus · Accepted Answer

In a purely capacitive circuit, the current leads the voltage by 90 degrees, which is equivalent to one-fourth of a cycle. This is because the capacitor charges and discharges ahead of the voltage changes, causing the current to peak before the voltage does.

In a Purely Capacitive Circuit the Current