Question

A coil has a self-inductance of $0.05$ henry. Find magnitude of the emf induced in it when the current flowing through it is changing at the rate $100A{s}^{-1}$.

Answer 1

Given, self-inductance, $L=0.05$ Henry
Rate of change of current, $\frac{di}{dt}=100A{s}^{-1}$
Let, Magnitude of e.m.f. $e$
We know that, $L=\frac{e}{di/dt}$
$0.05=\left|\begin{array}{c}\frac{e}{100}\end{array}\right|$
$|e|=5V$