The current in a coil changes from 4 amp...

The current in a coil changes from `4` ampere to zero in `0.1s`. If the average e.m.f. induced is `"100 volts"`, what is the self-inductance of the coil?

A

`2.5 H`

B

`25H`

C

`400 H`

D

`40 H`

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The correct Answer is:

A

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