Two wires lie in the plane of the page. Wire 1 carries conventional current to t
ID: 1487925 • Letter: T
Question
Two wires lie in the plane of the page. Wire 1 carries conventional current to the left, and conventional current to the right: wire 2 carries I2 hoose from the following possible directions to answer the question below: e: out of page O f: into page ® g: zero magnitude h: None of the above Q25: What is the direction (a -h) of the magnetic force that wire 1 exerts on wire 2? hatis me direcnon a n)of tne magnetic forte mut wirelext 25A. What is the magnitude of the force per 1 m of wire 2, if I1-0.35 A, 12-13 A, and the istance between the wires is 200 mm?Explanation / Answer
Current in Wire 1 , I1 = 0.35 A
Current in Wire 2 , I2 = 13 A
Distance between two wires = 200 * 10^-3 m
Wire 2 will Experience a Force due to the Magnetic field of Wire 1m which is B1 = uo * I1 / (2*pi*d) ).
Force per unit Length is given by , F/l = uo*I1*I2/(2*pi*d)
F/l = 4*pi*10^-7 * 0.35*13) /(2*pi * 0.2)
F/l = 4.55* 10^-6 N/m
Magnitude of force per 1 m of Wire, F/l = 4.55* 10^-6 N/m
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