The figure shows a rod of length L - 12.8 cm that is forced to move at constant speed v= 5.80 m/s along horizontal rails. The rod, rails, and connecting strip at the right form a conducting loop. The rod has resistance 0.581 02; the rest of the loop has negligible resistance. A current i = 140 A through the long straight wire at distance a 13.8 mm from the loop sets up a (nonuniform) magnetic field throughout loop. Find the (a) magnitude of the emf and (b) current induced in the loop. (c) At what rate is thermal energy generated in the rod? (d) What is the magnitude of the force that must be applied to the rod to make it move at constant speed? (e) At what rate does this force do work on the rod? wwwg a + X X X . X X X X • .. . . • e . . < . X ● . . • ● X ● . . . . · . ● · B ● . ● · ·
The figure shows a rod of length L - 12.8 cm that is forced to move at constant speed v= 5.80 m/s along horizontal rails. The rod, rails, and connecting strip at the right form a conducting loop. The rod has resistance 0.581 02; the rest of the loop has negligible resistance. A current i = 140 A through the long straight wire at distance a 13.8 mm from the loop sets up a (nonuniform) magnetic field throughout loop. Find the (a) magnitude of the emf and (b) current induced in the loop. (c) At what rate is thermal energy generated in the rod? (d) What is the magnitude of the force that must be applied to the rod to make it move at constant speed? (e) At what rate does this force do work on the rod? wwwg a + X X X . X X X X • .. . . • e . . < . X ● . . • ● X ● . . . . · . ● · B ● . ● · ·
Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter30: Faraday's Law
Section: Chapter Questions
Problem 38AP: In Figure P30.38, the rolling axle, 1.50 m long, is pushed along horizontal rails at a constant...
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