Physics

Problem

A resistor of

20\,\Omega

, an unknown inductor and a

100\,\mu\text{F}

capacitor are connected in series to a

230\,\text{V}

(rms),

50\,\text{Hz}

supply. a. (i) Find the inductance required for the circuit to be in resonance. b. (ii) Calculate the rms current in the circuit at resonance.