Physics

Problem

For a series

R

–

L

–

C

circuit with

R = 40\,\Omega

L = 80\,\text{mH}

and

C = 50\,\mu\text{F}

: (i) Find the resonant frequency

f_0

. (ii) Calculate the impedance of the circuit when the frequency of the applied voltage is

10\%

higher than

f_0