Question

Three long wires are connected to a meterstick and hang down freely. Wire 1 hangs from the
50-cm mark at the center of the meterstick and carries 1.50 A of current upward. Wire 2
hangs from the 70-cm mark and carries 4.00 A of current downward. Wire 3 is to be attached
to the meterstick and to carry a specific current, and we want to attach it at a location that
results in each wire experiencing no net force.

a) Determine the position of wire 3.

b) Determine the magnitude and direction of current wire 3.

Answer 1