Question: Problem 1: A straight, horizontal length of copper wire has a current i = 28 A through it. What are the magnitude and direction

Problem 1: A straight, horizontal length of copper wire has a current

Problem 1: A straight, horizontal length of copper wire has a current i = 28 A through it. What are the magnitude and direction of the minimum magnetic field needed to suspend the wire- that is, to balance the gravitational force on it? The linear density (mass per unit length) of the wire is 46.6 g/m.

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