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  4. An infinitely long cylinder is kept parallel to a uniform magnetic field B directed along positive z -axis. The direction of induced current on the surface of cylinder as seen from the z -axis will be

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Q. An infinitely long cylinder is kept parallel to a uniform magnetic field $B$ directed along positive $z$ -axis. The direction of induced current on the surface of cylinder as seen from the $z$ -axis will be

Electromagnetic Induction

Solution:

Since the magnetic field is uniform, hence there is no change in the magnetic flux linked with cylindrical wire and hence no current will be induced on the surface of cylindrical wire.