A series circuit consists of

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

Problem

R = 2\,\Omega

L = 0.05\,\text{H}

and

C = 80\,\mu\text{F}

. For the two operating frequencies given below, answer the following: (i)

f = 100\,\text{Hz}

(ii)

f = 400\,\text{Hz}

(a) Calculate the phase angle

\phi

between the source voltage and the current for each frequency and state whether the current leads or lags. (b) Which of the two frequencies is closer to the circuit’s resonant frequency? Justify briefly.

Related theory

Resonance in AC Circuits
AC Circuit Analysis
Alternating current
Series LCR circuit
AC applied to a series LCR circuit

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