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In a circuit, the current lags behind the voltage by a phase difference of $\pi / 2$, the circuit will contain which of the following ?
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Only $L$
When a circuit contains inductance only, then the current lags behind the voltage by the phase difference of $\frac{\pi}{2}$ or $90^{\circ}$.
While in a purely capacitive circuit, the current leads the voltage by a phase angle of $\frac{\pi}{2}$ or $90^{\circ}$. In a purely resistive circuit current is in phase with the applied voltage.
While in a purely capacitive circuit, the current leads the voltage by a phase angle of $\frac{\pi}{2}$ or $90^{\circ}$. In a purely resistive circuit current is in phase with the applied voltage.
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