A 0.200-kg metal rod carrying a current of 10.0 A glides
Chapter 19, Problem 19.54(choose chapter or problem)
A 0.200-kg metal rod carrying a current of 10.0 A glides on two horizontal rails 0.500 m apart. What vertical magnetic eld is required to keep the rod moving at a constant speed if the coefcient of kinetic friction between the rod and rails is 0.100?
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