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In an electrical circuit, R, L, C and 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 `(pi)/(3)`. If instead, C is removed from the circuit, the phase difference is again `(pi)/(3)`. The power factor of the circuit is

A

1

B

`(sqrt(3))/2`

C

`1/2`

D

`1/(sqrt(2))`

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The correct Answer is:
A
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