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A seriesLCR circuit is connected to an a...

A seriesLCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is `pi/3`. If instead C is removed from the circuit phase difference is agin `pi/3` between current and voltage. Power factor of circuit is:

A

`0.5`

B

`1.0`

C

`-1.0`

D

Zero

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