I am working on a lab where we were measuring how magnetic force between two parallel conductors varies with current and the separation between the two conductors. I need to find a formula for the dependence of Force on current to create a fit line on the data in my graph that shows the relation between them. I know the general equation is F=BLIsin(theta) but I remember my professor telling us that the relationship is not linear. I am not sure where to go from here or what I am missing. Is there a part of the relationship that I am missing?