For the magnetic circuit:
Derive the circuit approximation.
Compute all magnetic fluxes if the total solenoid current is I.
Rm = L / μS
The Attempt at a Solution
Mostly, right now, I'm just trying to determine the magnetic circuit equivalent. From there it seems like simple circuit analysis. (Note that in my recreation of the diagram, I failed to add in the small L5 annotated at the top right of the larger subcircuit).
Is my intuition correct in treating the different media as a parallel of three resistances? This one is a bit strange, I can't find any solid worked examples of this type with differing media.
edit: The two resistances Rg1 and Rg2 represent the air-gap.