A 9.0-cm-long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire and rail is 0.34? . Pulling the wire with a force of 1.1Ncauses 4.4W of power to be dissipated in the circuit.
What is the speed of the wire when pulled with 1.1N ?
What is the strength of the magnetic field?