Three wires are equally spaced along a line (perpendicular to the page) as shown below. Wires A and B each carry current i = 4.4 A into the page. When wire C carries no current, wire B experiences a force F. A With no other currents changed, in order for wire B to experience a force 3F in the same direction as the original F, the current in wire C must be set equal to what magnitude? Express your answer in amperes, to at least one digit after the decimal point.
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A: (a) B = u0*I1/(2pi*a) = (4pi*10^-7*1.14)/(2pi*1*10^-3) = 228*10^-6 T = 228 uT upward
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