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A pure inductor of 318 mH and a pure res...

A pure inductor of 318 mH and a pure resistor of 75 `Omega` are connected in series to an ac source of 50 Hz. The voltage across 75 `Omega` resistor is found to be 150 V . The source voltage is :

A

150 V

B

175 V

C

220 V

D

250 V

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