A long straight horizontal wire carries a current I = 4.80 A to the left. A positive 1.00 C charge moves to the right at a distance 5.00 m above the wire at constant speed v = 4500 m/s . What is the magnitude B of the magnetic field at the location of the charge due to the current-carrying wire?

Question

i tried B= (mu*I/2*pi*r). It keeps saying its wrong? help!

Answer 1

That's the right equation.
Got me.