The magnetic flux linked with a coil varies with time as `phi=3t^(2)+4t+9` webers. The induced emf at `t=2s` is

The magnetic flux linked with the coil varies with time as phi = 3 t^2 + 4t + 9 . The magnitude of induced emf at t = 2 second is

The magnetic flux linked with a coil varies with time t as phi=4t^(2)-12t+7 where phi is in weber and tin second.The induced current is zero at time t equals to

The magnetic flux linked with a coil varies with time t as phi=at^(2)+bt+c , where a, b and c are constants. The emf induced in the coil will be zero at a time of

The magnetic flux linked with a coil varies as phi=3t^(2)+4t+9. Find the magnitude of the emf induced at t = 2S.

The magnetic flux (phi) linked with a coil varies with time (t) as phi=at^(n) , where a and n are constants. The induced emf in the coil is e. Which of the following are correct?