A long wire carrying a 5.0 A current perpendicular to the xy-plane intersects the x-axis at x= - 2.0 cm . A second, parallel wire carrying a 3.5 A current intersects the x-axis at x=+ 2.0cm .
A). At what point on the x-axis is the magnetic field zero if the two currents are in the same direction?
B). At what point on the x-axis is the magnetic field zero if the two currents are in opposite directions?