199 B 2. A metal bar with length L, mass m, and resistance R is placed on frictionless metal rails that are inclined at an angle & above the horizontal. The rails have negligible resistance. A uniform magnetic field of magnitude B is directed downward as shown in the figure. The bar is released from rest and slides down the rails. a. Is the direction of the current induced in the bar from a to b or from b to a? Make sure to explain your answer. B b

199 B 2. A metal bar with length L, mass m, and resistance R is placed on frictionless metal rails that are inclined at an angle & above the horizontal. The rails have negligible resistance. A uniform magnetic field of magnitude B is directed downward as shown in the figure. The bar is released from rest and slides down the rails. a. Is the direction of the current induced in the bar from a to b or from b to a? Make sure to explain your answer. B b

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 84CP: The accompanying figure shows a metal disk of inner radius r1 and other radius r2 rotating at an...

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