Q 12-06-011NEETJEE MainEasy
The magnetic flux through a coil varies as $\phi = (3t^2 + 2t)$ mWb, with $t$ in seconds. The induced emf at $t = 2$ s is
Answer: (A) $14$ mV
$|\varepsilon| = \dfrac{d\phi}{dt} = 6t + 2 = 14$ mV at $t = 2$ s.
Solution by Sreeraj P, M.Sc Physics