Question

An A.C. circuit containing only capacitance, the current :

• A. Lags the voltage by ${90}^o$
• B. Leads the voltage by ${90}^o$
• C. Remains in phase with voltage
• D. Lags the voltage by ${180}^o$

Answer 1

The correct option is B Leads the voltage by ${90}^o$

In an a.c. circuit containing resistance onIy voltage & current remain in the same phase. If circuit contains inductance only, voltage remains ahead of current by phase difference of ${90}^o$.
If circuit contains capacitance only, current remains ahead of voltage by a phase difference of ${90}^o$.