STATEMENT-1 A vertical iron rod has a coil of wire wound over it at the bottom end
Channel: Doubtnut
Date: 26/01/2020

STATEMENT-1 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. because STATEMENT-2 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 upward direction