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A varying current in a coil change from ...

A varying current in a coil change from `10A` to `0A` in `0.5 sec`. If the average emf induced in the coil is `220V`, the self inductance of the coil is

A

5 H

B

10 H

C

11 H

D

22 H

Text Solution

Verified by Experts

The correct Answer is:
C
`e=L(dI)/(dt)`
`220=Lxx(10)/(0.5)`
`therefore L=11H`
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