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A transformer of efficiency 90% has turn...

A transformer of efficiency 90% has turns ratio 10 : 1. If the voltage across the primary is 220 V and current in the primary is 0.5 A, then the current in secondary is

A

5.5 A

B

`5 A`

C

`4 A`

D

4.5 A

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The correct Answer is:
D
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