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

When current changes from + 2A to -2A in 0.05 S, an emf of 8V is induced in the coil. The self inductance of the coil is

A

0.2H

B

0.4H

C

0.8H

D

0.1H

Text Solution

Verified by Experts

The correct Answer is:
D
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Current in a circuit falls from 4.8A to 0.2A in 0.1s. If an average emf of 220V induced, give an estimate of the self inductance of the circuit.

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Knowledge Check

  • When current changes from 3A to 2A in one millisecond a coil produces 5V. Its self inductance is

    A
    5100H
    B
    5mH
    C
    50H
    D
    5H

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