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When the current changes from +2A to -2A...

When the current changes from `+2A` to `-2A` in `0.05s`, and emf of `8B` is induced in a coil. The coefficient of self-induction of the coil is

A

`0.1H`

B

`0.2 H`

C

`0.4H`

D

`0.8 H`

Text Solution

Verified by Experts

The correct Answer is:
A
`8 = L(4)/(0.05)`
`rArr L = 2 xx 0.05H = 0.1 H`
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