1. The problem statement, all variables and given/known data A rectangular loop wire is placed next to a straight wire, as shown in the figure. There is a current of 3.5 A in both wire. Figure: http://www.flickr.com/photos/65980314@N06/6020832477/ 2. Relevant equations F = ((mu(0)*I1*I2) / (2*pi*r)) * L force in terms of current 3. The attempt at a solution I broke it down to two forces F1 and F2 and then added them but I'm not getting the correct answer.