qz5sol_8702sm10

# qz5sol_8702sm10 - TA Tomoyuki Nakayama Friday July 2 2010...

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TA: Tomoyuki Nakayama Friday, July 2, 2010 PHY 2048: Physic 2, Discussion Section 8702 Quiz 5 (Homework Sets #8 & #9) Name: UFID: Formula sheets are not allowed. Calculators are allowed. Do not store equations in your calculator. You need to show all of your work for full credit. ________________________________________________________________________________ The figure below right shows a rod of length L = 20.0 cm that is forced to move to the right at a constant speed v = 25.0 m/s along horizontal rails. The rod, rails and connecting strip at the right form a conducting loop. The rod has resistance 50.0 m ; the rest of the loop has negligible resistance. A current i = 80.0 A through the long straight wire at distance a = 4.00 cm sets up a magnetic field through the loop. a) What are the magnitude and direction of the current induced in the loop? (To show the direction, draw an arrow in the figure.) The strength of the magnetic field due to a straight wire depends on the perpendicular distance from the wire. It is given by B = μ 0 i/(2 π r).
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