Question

Suppose the circuit parameters in a series RLC circuit are: L = 1.0 µH, C = 10.0 nF, R = 100Ω, and the source voltage is 220 V. Determine the resonant frequency of the circuit and the amplitude of the current at resonance

Answer 1

Resonant frequency = 1/√LC

= 1/√1×10

= 1/√10

Amplitude of current at resonance

Z= R

i = V/R

= 220/100

= 2.2 A