A long horizontal wire carries a current of 48 A. A second
Chapter 15, Problem 42P(choose chapter or problem)
(II) A long horizontal wire carries a current of 48 A. A second wire, made of 2.5 - mm -diameter copper wire and parallel to the first, is kept in suspension magnetically 15 cm below (Fig. 20-58). (a) Determine the magnitude and direction of the current in the lower wire. (b) Is the lower wire in stable equilibrium? (c) Repeat parts (a) and (b) if the second wire is suspended 15 cm above the first due to the latter's field.
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