magnetic force

[figs]

The x, y, and z components of a magnetic field are Bx=0.193 T, By=0.233 T, and Bz=0.263 T. A 29.5 cm wire is oriented along the z axis and carries a current of 4.01 A. What is the magnitude of the magnetic force that acts on this wire?

how do i calc my B
cuz i know
f=4.01A/(0.295m)(???T)(sin90)

[dextercioby]

What's the expression of the electromagnetic force...?

Daniel.