(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

http://i.imgur.com/mgIkS.png

Two long parallel wires carry currents of 2.03 A and 8.83 A. The magnitude of the force per unit length acting on each wire is 4.49*10^5 N/m. Find the separation distance of the wires expressed in millimeters.

2. Relevant equations

I'm not entirely sure.

3. The attempt at a solution

I thought that I would need to use the formula:

http://latex.codecogs.com/gif.latex?F_{21}=(\mu_0*I_1*I_2*L )/(2\pi d)

I don't have L however, so how do I solve for d?

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# Separation distance between wires - Magnetic fields

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