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An ideal transformer is used on 220V line to deliver 2A at 110V. the current flowing in the primary of the transformer is
Question

An ideal transformer is used on 220V line to deliver 2A at 110V. the current flowing in the primary of the transformer is

A.

2A

B.

1A

C.

4∙4A

D.

More than one of the above

E.

None of the above

Correct option is B

The correct answer is 1 A.
ep = 220, es = 110, Is = 2A
so ep/ es = Is/Ip
Ip=1A

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