In a laboratory test

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

Problem

In a laboratory test, an AC circuit shows readings

V_{\text{rms}}=240\,\text{V}

and

I_{\text{rms}}=5\,\text{A}

on the voltmeter and ammeter respectively, while the wattmeter indicates an average power of

660\,\text{W}

. Determine the power factor of the circuit. (a)

0.83

(b)

0.55

(c)

1.00

(d)

0.39