The average e.m.f. induced in a coil in which the current changes from 2 ampere to 4 ampere in 0.05 second is 8 volt. What is the self inductance of the coil?

Question

The average e.m.f. induced in a coil in which the current changes from 2 ampere to 4 ampere in 0.05 second is 8 volt. What is the self inductance of the coil? (A) 0.1 H (B) 0.2 H (C) 0.4 H (D) 0.8 H

Tardigrade Admin · Accepted Answer

e=-L (d i/d t) ⇒ 8=L ((4-2)/0.05) ⇒ L=0.2 H

Q. The average e.m.f. induced in a coil in which the current changes from $2$ ampere to $4$ ampere in $0.05$ second is $8$ volt. What is the self inductance of the coil?

0.1 H

0.2 H

0.4 H

0.8 H

$e = - L \frac{d i}{d t}$
$\Rightarrow 8 = L \frac{( 4 - 2 )}{0.05}$
$\Rightarrow L = 0.2 H$

Q. The average e.m.f. induced in a coil in which the current changes from2 ampere to 4 ampere in 0.05 second is 8 volt. What is the self inductance of the coil?