Each of two parallel wires separated by 6.0 mm carries a 40-A current. These two currents are in the same direction. Determine the magnitude of the magnetic field at a point that is 5.0 mm from each of the wires.
A. 2.6 mT
B. zero
C. 1.9 mT
D. 1.6 mT
E. 3.2 mT
Answer: A
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