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A transformer is used to light a 100W an...

A transformer is used to light a `100W` and `110V` lamp form a `220V` mains. If the main current is `0.5 A`, the efficiency of the transformer is approximately

A

`86%`

B

`91 %`

C

`96 %`

D

` 98 %`

Text Solution

Verified by Experts

The correct Answer is:
B
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