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Shows a wire sliding on two parallel, c...

Shows a wire sliding on two parallel, conducting rails placed at a separaton l. A magnetic feld B exists in a direction perpendicular to the plane of the rails. What force is necessary to keep the wire moving at a constatn velocity `v` ?

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Verified by Experts

Since `F_(magnetic =i//B`
`This force produces an acceleration of the wire.`
`Since the velocity is given to be constant.Hence net force acting on the wire must be zero.
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