The coefficient of mutual induction betw...

The coefficient of mutual induction between two coils is `4H`. If the current in the primary reduces from `5A` to zero in `10^(-3)` second, then the induced e.m.f. in the secondary coil will be

`10^(4)V`

`25xx10^(3)V`

`2xx10^(4)V`

`15xx10^(3)V`

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