A series – – circuit has

PHYSICS · Subjective · CBSE · Physics · Alternating Current · Alternating Current

Problem

A series

R

–

L

–

C

circuit has

R=15\,\Omega

L=0.10\,\text{H}

and

C=25\,\mu\text{F}

. The circuit is connected to a variable–frequency source of constant rms voltage. The current attains its maximum value at the resonant frequency

f_0

. Calculate the two frequencies

f_1

and

f_2

at which the rms current falls to

I_{\text{max}}/\sqrt{2}