Problem C1: Consider the two infinitely long wires shown above in the figure. The wires are separated by a distance d. The current in the top wire is n1I0, and the current in the bottom wire is n2I0. The magnetic field B at a point midway between the two wires is B = n3 μ0 I0/(2 π d) k, where k points out of the page. What is n3?

n1 = n2 = Input n3:
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