What is the self-inductance of a coil which produces 5V

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What is the self-inductance of a coil which produces 5V when the current changes from 3 ampere to 2 ampere in one millisecond?

1. 5000 henry
2. 5 milli-henry
3. 50 henry
4. 5 henry

Correct Option: B

L =	e
L =	di
	dt

=	e dt	=	5 × 10^-3	H = 5 mH
	di		(3 - 2)