h.t integrals around a closed loop

["cambo24680" <cambo24680@xxxxxxxxxxx>]

Hi

I am new to FEMM and have created a design that is basically a ring 
of iron with an air gap in it and with one section of the iron being 
replace by a piece of magnetic material. If i do a line integral of 
h.t around a closed contour through this loop the answer should be 
zero but when i do in fact do this using femm i get a non zero answer.

I have done a similar integral around a torus of magnetic material 
with an air gap in it and again the integral does not equal zero, why 
is this?

i do not understand how to attach files to this e-mail so i have 
uploaded a file called ring2 with the design in. if anybody can tell 
me the best way to show you guys the deign i would be grateful.

adam