I need the inductance of a simple ferrite core wire-wound inductor. It's not clear how to get than in 2D Maxwell SV. The core is one material (ferrite), the windings are another (Copper). If you group them, the group must be of a single material, so no good. If you don't group them, the inductance matrix (actually impedance matrix) accepts only separate objects. That is, it accepts the windings as one object, and the ferrite as another. It then computes the self inductance if each object, and the mutual inductance between all of them. How do you compute the inductance of the core and windings together?