Question: A 9 . 0 - cmcm - long wire is pulled along a U - shaped conducting rail in a perpendicular magnetic field. The total

A 9.0-cmcm -long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire and rail is 0.32. Pulling the wire with a force of 1.1 NN causes 4.2 WW of power to be dissipated in the circuit.

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