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:
Text Solution
Verified by ExpertsThe correct answer is:
B
Here,
Efficiency of the transformer
Input power, 
Voltage across the primary coil,
Current in the secondary coil, 
As 
∴ Current in the primary coil,
Efficiency of the transformer,
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