Question:
A straight horizontal stretch of copper wire carries a
Last updated: 6/9/2023
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A straight horizontal stretch of copper wire carries a current i 30 A The linear mass density of the wire is 45 g m What is the magnitude of the magnetic field needed to float the wire that is to be balance its weight 1 147 G 2 441 G 4 0 G 3 14 7 G