# Homework Help: Two current carrying wires perpendicular to each other

1. Sep 29, 2010

### iacyclones25

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. Oct 1, 2010

### zhermes

You just have to do $$v \times B$$ (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?