First slide

Inductance

Question

An e.m.f. of 12 V is produced in a coil when the current in it changes at the rate of 45 A/min. The inductance of the coil is

Moderate

A

0.25 H
B

1.5 H
C

9.6 H
D

16.0 H

Solution

$| e | = L \frac{di}{dt} \Rightarrow 12 = L \times \frac{45}{60} \Rightarrow L = 16 H$

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