What are the values of the self induced emf in the circuit of the previous problem at the times indicated therein?

Explanation

(a) For first case at t=100ms,(di)/(dt)=0.27V`
Induced emf`=L(di)/(dt)=1xx0.27=0.27 V.`
(b) for the second case at t=200ms
`(di)/(dt)=0.036`
Induced emf=L(di)/(dt)=1xx0.036`
(c ) For the third case at t=1 sec,`
`(di)/(dt)=4.1xx10^(-9)V`
`Induced emf=L(di)/(dt)==4.1xx10^(-9)V`
0.036V.