Two long wires lie in a xy plane, and each carries a current in the positive x axis. Wire 1 is at y = 10.0 cm and carries 6.0A; wire 2 is at y = 5.00 cm and carries 10.0 A.
a) At what value of y does B = 0
b) In unit vector notation, what is the net magnetic field Bat the origin?
c) If the current in wire 1 is reversed, at what value of y does B = 0?