A series RLC circuit has ,

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

Problem

A series RLC circuit has

R=20\,\Omega

L=0.05\,\text{H}

, and

C=80\,\mu\text{F}

. It is connected to an AC source of rms voltage

100\,\text{V}

at a frequency of

40\,\text{Hz}

. What is the ratio of the rms current at resonance to the rms current at

40\,\text{Hz}

(nearest tenth)? (a)

3.3

(b)

0.5

(c)

2.1

(d)

2.9