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Question: The inductance of a coil is \(60 \mu H\). A current in this coil increases from 1.0 A to 1.5 A in 0....

The inductance of a coil is 60μH60 \mu H. A current in this coil increases from 1.0 A to 1.5 A in 0.1 second. The magnitude of the induced e.m.f. is

A

B

C

D

Answer

Explanation

Solution

e=Ldidt=60×10−6⋅(1.5−1.0)0.1=3×10−4volte = L \frac { d i } { d t } = 60 \times 10 ^ { - 6 } \cdot \frac { ( 1.5 - 1.0 ) } { 0.1 } = 3 \times 10 ^ { - 4 } \mathrm { volt }