Describe strength of the magnetic field, Physics

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Describe strength of the magnetic field

A 10-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 0.30 Ohms. Pulling the wire with a force of 1.1 N causes 4.1 Watts of power to be dissipated in the circuit.

1) What is the speed of the wire when pulled with 1.1 N?

2) What is the strength of the magnetic field?

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Physics: Describe strength of the magnetic field

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