In an electrical circuit R,L,C and an AC voltage source are all connected in series.

In An Electrical Circuit Rlc And An Ac Voltage Source Physics QuestionIn An Electrical Circuit Rlc And An Ac Voltage Source Physics Question

In an electrical circuit R,L,C and an AC voltage source are all connected in series. When L is removed from the circuit, the phase difference between the voltage and the current in the circuit is π/3. if instead, C is removed from the circuit, the phase difference is again π/3. The power factor of the circuit is

Options

(a) 1/2
(b) 1/√2
(c) 1
(d) √3/2

Correct Answer:

1

Explanation:

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  • Here in both case the phase difference is same that means inductive and capacitative reactance are same as R is constant as Xl=Xc the Z=R cos is R/Z is 1

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