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Quiz_07

Fundamentals of Physics, (Chapters 21- 44) (Volume 2)

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Quiz 7 Thursday – July 24 th , 2008 Name_______________________ Group_______________ Shown in the figure is a conducting rod of length L which is being pulled along horizontal, frictionless conducting rails at a constant speed v . The rails are connected at one end with a resistor R . The whole setup has been put inside a uniform magnetic field B , directed into the page. For this problem use L = 8.0 cm, v = 25 m/s, R = 50 , and B = 70 mT.
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Unformatted text preview: (a) What is the magnitude of the current in the conducting loop? (b) What is the direction (clockwise or counterclockwise) of that current? (c) What is the magnitude of the emf induced in the rod? (d) What is the direction of that emf (up or down the rod)? (e) At what rate is heat produced by this setup? (f) How big is the force needed to make sure the speed v remains constant? (g) At what rate does the force do work?...
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