A wire is sliding on two parallel conducting rails placed at a separation of 1m as shown in figure Magnetic field 2T exists in a

Question

A wire is sliding on two parallel conducting rails placed at a separation of 1m as shown in figure Magnetic field 2T exists in a direction perpendicular to rails What force is necessary to keep the wire moving with a constant velocity of 1 cm sec 1m ww 50 92 B 2T F v 1 cm s

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