Magnetic force on a wire

  1. 1. The problem statement, all variables and given/known data
    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?

    2. Relevant equations
    no clue

    3. The attempt at a solution
  2. jcsd
  3. danago

    danago 1,124
    Gold Member

    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.
  4. F=I*LxB?
  5. Redbelly98

    Redbelly98 12,046
    Staff Emeritus
    Science Advisor
    Homework Helper

    Yes, that's the one.

    The tricky part is what to use for L.
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