Question

In a purely inductive circuit, the current:

• A. is in phase with the voltage
• B. is out of phase with the voltage
• C. leads the voltage by $\pi /2$
• D. lags behind the voltage by $\pi /2$

Answer 1

The correct option is D lags behind the voltage by $\pi /2$

In a purely inductive circuit (an AC circuit containing inductance only) the current lags behind the voltage by $\frac{\pi }{2}$.