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In a transformer , the coefficient of mu...

In a transformer , the coefficient of mutual inductance between the primary and the secondary coil is `0.2` henry. When the current changes by `5` ampere//second in the primary, the induced e.m.f. in the secondary will be

A

`2500 V`

B

`25000 V`

C

`2510V`

D

`Zero`

Text Solution

Verified by Experts

The correct Answer is:
B
`e=-M(di)/(dt)=-5xx((-5))/(10^(-3))=25000V`
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