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A 50 Hz a.c. current of crest value 1A f...

A 50 Hz a.c. current of crest value 1A flows through the primary of a transformer. If the mutual inductance between the primary and secondary be `1.5 H` , the crest voltage induced in secondary is-

A

`75 V`

B

`150 V`

C

`225 V`

D

`300 V`

Text Solution

Verified by Experts

The correct Answer is:
D
`T=1/50 s`
For the current to rise from zero to peak value,
required time is `T/4` i.e. `1/200 s`.
Now `E=1.5 (1-0)/(1//200) V=1.5xx200V=300 V`.
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