In the figure below, a metal rod is forced to move with constant velocity along two parallel metal rails, connected with a strip of metal on one end. A magnetic field of magnitude B = .5 T points out of the page. L B a) If the rails are separated by L = 25 cm and the speed of the rod is 50 cm/s, what emf is generated? b)If the rod has resistance 20 Ohm and connector has negligible resistance, what is the current in the rod? A c) At what rate the energy is being transferred to thermal energy? d)What external force is needed to maintain the constant velocity?

In the figure below, a metal rod is forced to move with constant velocity along two parallel metal rails, connected with a strip of metal on one end. A magnetic field of magnitude B = .5 T points out of the page. L B a) If the rails are separated by L = 25 cm and the speed of the rod is 50 cm/s, what emf is generated? b)If the rod has resistance 20 Ohm and connector has negligible resistance, what is the current in the rod? A c) At what rate the energy is being transferred to thermal energy? d)What external force is needed to maintain the constant velocity?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 69AP: The conducting rod shown in the accompanying figure moves along parallel metal rails that are 25-cm...

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