A transformer having efficiency of 90% is working on 200 V and 3 kW power supply. If the current in the secondary coil is 6 A, the voltage across the secondary coil and the current in the primary coil respectively are
- A300 V, 15 A
- B450 V, 15 A
- C450 V, 13.5 A
- D600 V, 15 A
✓ Correct answer: B
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