How Does Magnetic Force Affect a Wire in a Field?

[sdevoe]

Homework Statement

A wire is oriented along the x-axis. It is connected to two batteries, and a conventional current of 2.3 A runs through the wire, in the +x direction. Along 0.27 m of the length of the wire there is a magnetic field of 0.82 tesla in the +y direction, due to a large magnet nearby. At other locations in the circuit, the magnetic field due to external sources is negligible.
What is direction and magnitude of the magnetic force on the wire?

Homework Equations

no clue

The Attempt at a Solution

nothing?

 

[danago]

There is an equation that relates the force on a wire of length L to the current I flowing and the magnetic field strength B. See if you can find it.

 

[sdevoe]

F=I*LxB?

 

[Redbelly98]

Yes, that's the one.

The tricky part is what to use for L.