List of top Physics Questions on Electromagnetic Field (EMF) asked in CUET (UG)

An emf of 0.5 V is developed in the secondary coil, when current in primary coil changes from 5.0 A to 2.0 A in 300 milliseconds. The mutual inductance of two coils would be:

The statement that is NOT true about induced emf is:

A potentiometer with a cell of 2.4 volts and internal resistance of 2 Ω maintains potential drop across the resistance wire AB of length 2 m and resistance 10 Ω. A standard cell that maintains a constant EMF of ‘V’ volt with an internal resistance of 0.2 gives a balance point at 1.6 M length of the wire. The value of EMF of the second (standard) cell(V) is:

The induced EMF produced in the moving rod if the magnetic field becomes parallel to the rails instead of becoming perpendicular will be :

Suppose K is open and the rod is moved with speed of 12 cms-1 in the direction. The magnitude of the induced EMF will be :