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The average e.m.f. induced in a coil in ...

The average e.m.f. induced in a coil in which the current changes from `2` amperes to `4` amperes in `0.05` seconds is `8` volts. What is the self-inductance of the coil?

A

`0.1 H`

B

`0.2 H`

C

`0.4 H`

D

`0.8 H`

Text Solution

Verified by Experts

The correct Answer is:
B
`e=-L((di)/(dt))implies8=-Lxx(-(2)/(0.05)) impliesL=0.2H`
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