I am trying to calculate the magnetic field, Hg, and have been looking these formulas. I would like to know if I am on the right track, as something is not working out for me. From these with a uniform area, the area of the core, Ac is equal to the area of the air gap, Ag. The flux density in the core, Bc, is equal to the flux density of the gap, Bc?
And to work out Hg, it is Bg/Uo, Uo the permeability of free space? And similarly for Hc the magnetic field in the core is Bc/u, u the permeability of the core?
I am looking at the last formula for the magnetic motive force, Ni = Hclc + Hglg But in my workings I do not get it to match and I think I have gone wrong somewhere or interpreted something wrong.
Any help and explanation would be appreciated.