A conducting ring of radius r and resistance R rolls on a horizontal surface with constant velocity v- The magnetic field B is uniform normal to the plane of the loop-A- An induced current I -2 Bvr - R flows in the anticlockwise direction-B- An induced current I -2 Bvr - R flows in the clockwise directionC- The induced emf- between O and Q is 2 Bvr-D- None of these

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Byju's Answer

Standard XII

Physics

Eddy Currents

A conducting ...

Question

A conducting ring of radius r and resistance R rolls on a horizontal surface with constant velocity v. The magnetic field B is uniform normal to the plane of the loop.

The induced emf, between O and Q is 2Bvr.

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An induced current I =

\frac{2 B v r}{R}

flows in the clockwise direction

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An induced current I =

\frac{2 B v r}{R}

flows in the anticlockwise direction.

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None of these

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Solution

The correct option is A The induced emf, between O and Q is 2Bvr.
about point O Ring is in pure rotation.

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