Problem C15: In the figure above there are 4 wires that are perpendicular to the screen. The current in the wires are +1 Amp, n1 Amp, n2 Amp, and +3 Amp. The "+" direction is out of the screen. If the closed path integral of Bdl = μ0 n3 where n3 is the number of Amps, what is n3. Note that the direction of the path integral is clockwise.

n1 = n2 = Input n3:
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