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A transformer having effieciency of 90% ...

A transformer having effieciency of 90% is working on 200 V and 3kW power supply. If the current in the secondary coil is 6A, the voltage across the secondary coil and the current in the primary coil respectively are

A

300 V , 15 A

B

450 V , 15 A

C

300 V , 13.5 A

D

600 V , 15 A

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