Question

In an a.c. circuit containing only capacitor, the phase difference between current and voltage is

• A. 0°
• B. 90°
• C. 180°
• D. 45°

Hint:

In a capacitor, current leads voltage by 90°, while in an inductor, voltage leads current by 90°.

Answer 1

The Correct Option is B

Step 1: Understanding the phase difference in a capacitor.
In an alternating current (a.c.) circuit containing only a capacitor, the current leads the voltage by 90°. This is because the voltage across the capacitor lags the current due to the charging and discharging of the capacitor.
Step 2: Conclusion.
Thus, the phase difference between the current and voltage in a purely capacitive circuit is 90°.
\[ \boxed{90^\circ} \]