Q 12-06-012NEETJEE MainEasy
A coil of $100$ turns and area $0.02\ \text{m}^2$ lies perpendicular to a magnetic field that falls uniformly from $0.5$ T to zero in $0.1$ s. The average induced emf is
Answer: (B) $10$ V
$\varepsilon = N\dfrac{\Delta\phi}{\Delta t} = 100 \times \dfrac{0.02 \times 0.5}{0.1} = 10$ V.
Solution by Sreeraj P, M.Sc Physics