Q 12-06-028JEE MainMedium
A $0.4$ H inductor carries a current that increases uniformly from $0$ to $3$ A in $0.2$ s. Find the induced emf in volts.
Numerical value type. Enter your answer.
Answer: 6
$\varepsilon = L\dfrac{\Delta I}{\Delta t} = 0.4 \times \dfrac{3}{0.2} = 6$ V.
Solution by Sreeraj P, M.Sc Physics