The flux linked with a coil at any instant '$t$' is given by $\phi = 10t^2 - 50t + 250$. The induced emf at $t = 3$ s is (1) 190 V (2) $-190$ V (3) $-10$ V (4) 10 V
The flux linked with a coil at any instant '$t$' is given by $\phi = 10t^2 - 50t + 250$. The induced emf at $t = 3$ s is\\
(1) 190 V\\
(2) $-190$ V\\
(3) $-10$ V\\
(4) 10 V