The current I in a straight wire passing through the centre of conducting loop is increasing at a constant rate. What will be the emf induced in the loop?
A circular conducting loop of radius a and resistance is placed with the plane perpendicular to a time-varying magnetic field . Obtain expression for the current induced in the loop.
An aluminium ring is placed on the top of the iron core of an electromagnet. The current in the circuit is switched on and immediately the ring jumps up. Explain why ?
