First slide

Inductance

Question

The self inductance of a coil is 5 henry, a current of 1 amp change to 2 amp within 5 second through the coil. The value of induced e.m.f. will be

Moderate

A

10 volt
B

0.10 volt
C

1.0 volt
D

100 volt

Solution

$e = - L \frac{di}{dt} \Rightarrow e = 5 \times \frac{1}{5} = 1 volt$

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