A long horizontal wire carries a current of I_T = 49.2 A. A second wire (I), made of 2.70 mm diameter copper wire and parallel to the first but L = 12.8 cm below it, is held in suspension magnetically, as seen in the figure below. What is the current in the lower wire (Use right as the positive direction)?

 b. What is the current in the lower wire if the second wire is suspended L = 12.8 cm above the first due to the latter's field.

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Certainly I can help you with this problem a Lower wire suspended below the upper wire In this scenario for the lower wire to be held in suspension ma... View the full answer