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A 100% efficient transformer has 100 tur...

A `100%` efficient transformer has `100` turns in the primary and `25` turns in its secondary coil. Of the current in the secondary coil is `4` amp, then the current in the primary coil is

A

16A

B

8A

C

4A

D

1A

Text Solution

Verified by Experts

The correct Answer is:
D
In transformer,
`(N_(1))/(N_(2))=(l_(2))/(l_(1))` if there are no losses
`(100)/(25)=(4)/(l_(1)) rArr l_(1)=(25 xx 4)/(100)=(100)/(100)=1A`
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