Two parralel wires are 8 cm apart. The magnetic field halfway between them is 300 uT. What equal currents must be in the wires? Consider parralel and antiparralel currents
I use Ia=Ib
B = (u*i) / (2*Pi*distance) where distance = 0.04 m (0.08m divided by two since it is halfway)
then I solve for I, I get 60 Amperes, the answers is 30 amperes
What to do?