The magnetic flux linked with a coil changes with time t as Φ = 8t2 + 5t + 7, where Φ is in Webers and t is in seconds. The magnitude of the induced electromotive force (emf) in the coil at t = 4 seconds is:

A rectangular wire loop of sides 8 cm and 3 cm with a small cut is moving out of a region of uniform magnetic field of magnitude 0.3 T directed normal to the plane of the loop. The emf developed across the cut, if the velocity of the loop is 2 cm s-1 in a direction normal to the shorter side of the loop, will be:

The mutual inductance between two coils is 2 H. If the current in one coil changes from 0 to 10 A in 0.5 s, find the magnitude of the induced EMF in the second coil.