A series LCR circuit has

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

Problem

R = 40\,\Omega

L = 200\,\text{mH}

and

C = 10\,\mu\text{F}

. When connected to an AC source of rms voltage

100\,\text{V}

, the rms current is found to be

2.0\,\text{A}

. The angular frequency of the source is closest to (a)

3.3 \times 10^{3}\,\text{rad\,s}^{-1}

(b)

7.9 \times 10^{2}\,\text{rad\,s}^{-1}

(c)

1.5 \times 10^{2}\,\text{rad\,s}^{-1}

(d)

7.1 \times 10^{2}\,\text{rad\,s}^{-1}