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Unformatted text preview: Electrons move counterclockwise C) what is the direction of the magnetic force on the rod? The magnetic force is in the downward direction. d) what the magnitude of the magnetic force on the rod in terms of v, B, L, and R. F = ILB = (vB 2 L 2 )/R To maintain a constant EMF, the moving rod must maintain a constant velocity. In order to do this some external force must pull it to the right. a) What is the magnitude of the external force required in terms of v, B, L, and R? The external force must be equal and opposite to (vB 2 L 2 )/R. .to the right b) At what rate does this force do work on the rod? P= Delta W/Delta T = E Delta X /Delta T = F=((vB 2 L 2 )/R)v c) What is the power dissipated in the resistor? P= I 2 R = (vBL/R) 2 *R = (v 2 B 2 L 2 )/R d) Overall, is energy conserved? Since b) is equal to c), energy is conserved STUDY FARADAYS LAW Magnetic flux is in Webers (Wb)...
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