Question 1
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.
◦ 2.6 mT
◦ zero
◦ 1.9 mT
◦ 1.6 mT
◦ 3.2 mT
Question 2
Each of two parallel wires separated by 8.0 mm carries a 20-A current. These two currents are oppositely directed. Determine the magnitude of the magnetic field at a point that is 5.0 mm from each of the wires.
◦ 2.0 mT
◦ 1.6 mT
◦ 1.3 mT
◦ 1.8 mT
◦ 1.0 mT