Statement I A vertical iron rod has a coil of wire wound over it at the bottom end. An alternating current flows in the coil. The rod goes through a conducting ring as shown in the figure. The ring ca

Question

Statement I A vertical iron rod has a coil of wire wound over it at the bottom end. An alternating current flows in the coil. The rod goes through a conducting ring as shown in the figure. The ring can float at a certain height above the coil. Statement II In the above situation, a current is induced in the ring which interacts with the horizontal component of the magnetic field to produce an average force in the the upward direction.

TestHub · Accepted Answer

The induced current in the ring will interact with horizontal component of magnetic field and both will repel each other. This repulsion will balance the weight of ring. Hence, option (a) is correct.

Physics - EMI/AC Question with Solution | TestHub

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