Question

Two long, straight, parallel wires A and B, separated by a distance of 30 cm, carry

currents IA = 10A and IB = 30A. The currents in both the wires flow in the same

direction. Calculate the net magnetic field at the midpoint of the line joining the two

wires and perpendicular to them.

Answer 1

I think the net magnetic force of both the wire will be
IA+IB/2
10+30/2
40/2
20