Wednesday, November 11, 2020

Mastering Physics Problem 30.3

 Background

A 9.00-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 0.350 Ω. Pulling the wire at a steady speed of v = 4.00 m/s causes 4.50 W of power to be dissipated in the circuit.



Part A

How big is the pulling force?

Solution







Part B

What is the strength of the magnetic field?

Solution













 
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