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Homework Help: Two current carrying wires perpendicular to each other

  1. Sep 29, 2010 #1
    two long wires carry current and are at right angles to each other, but they do not touch. describe the force between them

    I found the magnetic field and force direction individually when one wire's current points north and the other east. I just don't quite understand the affect they have on each other. It's a concept problem. I understand the force on each other in parallel.
  2. jcsd
  3. Oct 1, 2010 #2
    You just have to do [tex]v \times B[/tex] (v cross B) to find the directions. Draw the cross, and look at the direction of the forces on each wire on both sides of the crossing wire (e.g. 4 points in a diamond with the crossing point at the center).

    Does that make sense? Or help at all?
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