A long wire carrying a 5. 0 A current perpendicular to the xy-plane intersects the x-axis at x= - 2. 0 cm 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?