A long horizontal wire carries a current of IT = 49.1 A. A second wire (I = 5.54×103 A, parallel to IT), made of 2.30 mm diameter copper wire and parallel to the first but a distance L below it, is held in suspension magnetically, as seen in the figure below. (This means the upwards magnetic force on that lower wire is just large enough to hold it up against its own weight)
What is the distance L between the wires? (The density of copper is 8.9E3 kg/m3.)
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A long horizontal wire carries a current of IT = 49.1 A. A
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