An a.c. source of rms voltage supplies a series RLC circuit in which the rms current…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

An a.c. source of rms voltage

200\,\text{V}

supplies a series RLC circuit in which the rms current is

4\,\text{A}

and the power factor is

0.80

(lagging). The average power consumed by the circuit is (a)

800\,\text{W}

(b)

1000\,\text{W}

(c)

640\,\text{W}

(d)

480\,\text{W}