First slide

Inductance

Question

If the current 30 A flowing in the primary coil is made zero in 0.1 sec. The emf induced in the secondary coil is 1.5 volt. The mutual inductance between the coil is

Moderate

A

0.005 H
B

1.05 H
C

0.1 H
D

0.2 H

Solution

$e = M \frac{di}{dt} \Rightarrow 1 .5 = M \times \frac{30}{0 .1} \Rightarrow M = 0 .005 H$

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