At resonance in a series LCR circuit

PHYSICS · Single correct · CBSE · Physics · Alternating Current · Alternating Current

Problem

At resonance in a series LCR circuit, which of the following statements is correct? (a) Circuit impedance equals

X_L + X_C

and current is in phase with voltage. (b) Circuit impedance equals

R

and current is in phase with voltage. (c) Circuit impedance becomes infinite and current lags voltage by

90^{\circ}

. (d) Circuit impedance equals

R

and the power factor is zero.