posted by Doryn .
The magnetic force on a straight wire .69 m long is 1.5 x 10^-3 N. The current in the wire is 16.9 A. What is the magnitude of the magnetic field that is perpendicular to the wire?
F = B I L
Solve for B, in units of Tesla
B = F/(L*I) = 1.5*10^-3/(0.69*16.9)
= ___ T