Two Long Parallel Wires Separated by 5

Multiple Choice

Two long parallel wires separated by 5.0 mm each carry a current of 60 A. These two currents are oppositely directed. What is the magnitude of the magnetic field at a point that is between the two wires and 2.0 mm from one of the two wires?

A) 2.0 mT
B) 10 mT
C) 8.0 mT
D) 1.6 mT
E) 7.2 mT