A long pair of wires conducts 24.0 A of dc current to, and from, an instrument.
ID: 1436646 • Letter: A
Question
A long pair of wires conducts 24.0 A of dc current to, and from, an instrument. The insulated wires are of negligible diameter but are 2.8 mm apart. A third wire is placed in the plane of the two wires shown in the figure below, parallel and just to the right. If it carries 24.0 A upward, what force per meter of length does it exert on each of the other two wires? Assume it is 3.1 mm from the nearest wire, center to center.
A long pair of wires conducts 24.0 A of dc current to, and from, an instrument. The insulated wires are of negligible diameter but are 2.8 mm apart. A third wire is placed in the plane of the two wires shown in the figure below, parallel and just to the right. If it carries 24.0 A upward, what force per meter of length does it exert on each of the other two wires? Assume it is 3.1 mm from the nearest wire, center to center. Force/length on left (farthest) wire: N/m Select... N/m-Select-- Force/length on right (nearest) wire: N/m-Select-- 2.8 mmExplanation / Answer
F1=i1i2/2d1=4*3.14*10-7*24*24/(2*3.14*.114)= 0.000001754 N/m towards left ( answer)
F2=i1i2/2d2=4*3.14*10-7*50/(2*3.14*.0986)=0.000002028 N/m towards right ( answer )
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