> Q. Current in a coil changes from $4 ,A$ to zero in $0.1$ second and the emf induced is $100, V$. The self inductance of the coil is – LIVE ANSWER TODAY

Q. Current in a coil changes from $4 ,A$ to zero in $0.1$ second and the emf induced is $100, V$. The self inductance of the coil is

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Current in a coil changes from $4 ,A$ to zero in $0.1$ second and the emf induced is $100, V$. The self inductance of the coil is

Solution:

Induced emf , $e =frac{-L d I}{d t} $

$therefore 100 =frac{-L[0-4]}{0.1} $

$Rightarrow L =frac{100 times 0.1}{4} $

$=2.5 ,H$

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