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Figure shows a wire sliding on two parallel, condu cting rails placed at a separation l. A magnetic field B exicts in a direction perpendicular to the plane of the rails. What force is necessary to keep the wire moving at a constant velocity v ? |
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Answer» Figure shows a wire sliding on two parallel, condu cting rails placed at a separation l. A magnetic field B exicts in a direction perpendicular to the plane of the rails. What force is necessary to keep the wire moving at a constant velocity v ?
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