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As shown in the figure, a straight conductor parallel to the x -axis can slide w

ID: 2141184 • Letter: A

Question

As shown in the figure, a straight conductor parallel to the x -axis can slide without friction on top of two horizontal conducting rails that are parallel to the y -axis and a distance of L=0.187m  apart, in a vertical magnetic field of 1.13T . A 20.1?A  current is maintained through the conductor. If a string is connected exactly at the center of the conductor and passes over a frictionless pulley, what mass m  suspended from the string allows the conductor to be at rest?


As shown in the figure, a straight conductor parallel to the x -axis can slide without friction on top of two horizontal conducting rails that are parallel to the y -axis and a distance of L=0.187m apart, in a vertical magnetic field of 1.13T . A 20.1?A current is maintained through the conductor. If a string is connected exactly at the center of the conductor and passes over a frictionless pulley, what mass m suspended from the string allows the conductor to be at rest?

Explanation / Answer

F = Mg

ILB = Mg

(Blv/R)LB = Mg

B2L2v/R = Mg