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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

0.2H

C

0.4H

D

0.8H

Text Solution

Verified by Experts

The correct Answer is:
A
`e = L (Deltal)/(Deltat)`
`therefore" "L= (e)/((Deltal)/(Deltat))=(8)/((4)/(0.05))= ( 8 xx 0.05)/(4)= 0.1 H`
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