Two Parallel Wires Run in a North-South Direction

Two parallel wires run in a north-south direction. The eastern wire carries 15.0 A southward while the western wire carries 6.0 A northward. If the wires are separated by 30 cm, what is the magnitude of the magnetic field at a point between the wires 10 cm from the western wire?

A) 3.0 μT
B) 6.0 μT
C) 15 μT
D) 27 μT
E) 90 μT

Correct Answer:

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