A series circuit containing a resistor

PHYSICS · Multi-part · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

R=20\,\Omega

, an inductor

L=0.10\,\text{H}

and a capacitor

C=100\,\mu\text{F}

is connected to a

230\,\text{V}

(rms) variable–frequency supply. (i) Calculate the rms current when the supply frequency is

50\,\text{Hz}

. (ii) Calculate the rms current when the supply frequency is

100\,\text{Hz}