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The current in a coil changes from 0 to ...

The current in a coil changes from 0 to 2 A in 0.05 sec. If the induced e.m.f is 80 V, the self inductance of the coil is

A

2.4 H

B

2 H

C

1.5 H

D

1 H

Text Solution

Verified by Experts

The correct Answer is:
B
`e = L(dI)/(dt) :. L = e(dt)/(dI) = (80 xx 5 xx 10^(-2))/(2) = 2 H`.
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MARVEL PUBLICATION-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS -TEST YOUR GRASP - 16
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