Question

Find out the e.m.f. produced when the current changes from $0$ to $1A$ in $10s$, given $L=10mH$.

• A. $1V$
• B. $1\mu V$
• C. $1mV$
• D. $0.1V$

Answer 1

Answer: (B)

$|e|=L\frac{di}{dt}\Rightarrow |e|=10\times 10^{-6}\times \frac{1}{10}=1\mu V$