In a capacitor in an AC circuit,the voltage:
A)leads the current by 90 $\degree$.
B)lags the current by 90 $\degree$.
C)may lead or lag the current depending on the frequency.
D)is in phase with 70.7% of the current.

Question

Quizplus · Accepted Answer

In a capacitor in an AC circuit, the voltage lags the current by 90 degrees. This is because when the AC voltage is applied, the capacitor charges and discharges alternatively, and during the charging and discharging cycle, the voltage is always behind the current by 90 degrees. Therefore, option B is the correct choice.

In a Capacitor in an AC Circuit,the Voltage: A)leads the Current

In a Capacitor in an AC Circuit,the Voltage:
A)leads the Current