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

When the current changes from `+2A` to `-2A` in `0.05` second, an e.m.f. of `8V` is induced in a coil. The coefficient of self-induction of the coil is

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:
A
`L =(|e|)/(di//dt)=8/((2-(2))/(0.5))=(8xx0.05)/4=0.1H`
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