#5, the answer is counterclockwise direction? #5. The direction of the magnetic force acting on the metal rail due to its current interacting with the external magnetic field

Physics for Scientists and Engineers, Technology Update (No access codes included)
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ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter27: Current And Resistance
Section: Chapter Questions
Problem 27.11OQ: Two conducting wires A and B of the same length and radius are connected across the same potential...
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Can you explain to me why for #5, the answer is counterclockwise direction?

#5. The direction of the magnetic force acting on the metal rail due to its current interacting with the external magnetic field

#8 - A metal rail slides outwards on a U-shaped metal bar located within the x-y
conducting bar
plane. The rail is initially located a distance of y = 1 m from the back side of the bar
and is traveling with a speed of v = Ay/At = 0.5 m/s. The bar has a width of L = 1m
and a resistance of R = 3 Q. The rail and the bar are within a constant external
magnetic field B = 7 T directed in the -z direction. Note that the enclosed area = A =
В
(L)(y), and AA = (L)(Ay).
Enter the following quantities, one per line, in the same order given below.
Numerical answers must also include appropriate units.
L
1. The numerical value (with units) of the initial magnetic flux through the enclosed area (when y = 1 m)
2. The direction of the induced EMF
3. The numerical value (with units) of the induced EMF
4. The numerical value (with units) of the current induced in the ring
5. The direction of the magnetic force acting on the metal rail due to its current interacting with the external
magnetic field
Transcribed Image Text:#8 - A metal rail slides outwards on a U-shaped metal bar located within the x-y conducting bar plane. The rail is initially located a distance of y = 1 m from the back side of the bar and is traveling with a speed of v = Ay/At = 0.5 m/s. The bar has a width of L = 1m and a resistance of R = 3 Q. The rail and the bar are within a constant external magnetic field B = 7 T directed in the -z direction. Note that the enclosed area = A = В (L)(y), and AA = (L)(Ay). Enter the following quantities, one per line, in the same order given below. Numerical answers must also include appropriate units. L 1. The numerical value (with units) of the initial magnetic flux through the enclosed area (when y = 1 m) 2. The direction of the induced EMF 3. The numerical value (with units) of the induced EMF 4. The numerical value (with units) of the current induced in the ring 5. The direction of the magnetic force acting on the metal rail due to its current interacting with the external magnetic field
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