Circuits in FEMM

[frank.e.lenning@xxxxxxxxxx]

How does the circuits feature in FEMM work for multiple conductors? 
Let's say I have two conductors of different materials that I define 
with Circuits to be carrying a total current of 1 amp together. How 
does FEMM solve this problem? Does it iteratively solve the problem 
by choosing different deltaV's for each conductor until it gets the 
right total current or is there some easier way that it uses to set 
the deltaV's? It appears to get the right answer, I'm just trying to 
understand how.