Changes
To add a new wire current source group to a project, right-click on "Wire Currents" on the Navigation Tree, and select "Insert New Current Source..." From the Wire Current Source Dialog, you can change the default brown color of the source group or set the values of the Current and Wire Radius. There is also a check box for "Reverse Current Direction". Note that this will reverse the direction of all the wire currents belonging to the same group. When you draw a line or polyline object under a wire current group in the Navigation Tree, you will notice that direction arrows are placed on the drawn CAD object. You can draw any curve object in the project workspace and convert it to a polyline using [[EM.Cube]]'s Polygonize Tool.
{{Note| If you draw [[[Curve Objects]|curve objects]] under a wire current group, they will be permanently converted to polyline objects before running the simulation engine.}} <table><tr><td> [[Image:Static3.png|thumb|270px| EM.Ferma's Charge Source dialog.]] </td><td> [[Image:Static4.png|thumb|270px| EM.Ferma's Wire Current Source dialog.]] </td><td> [[Image:Static5.png|thumb|270px| EM.Ferma's Volume Current Source dialog.]] </td></tr></table>
=== Permanent Magnets===
[[Image:Static6.png|thumb|270px| EM.Ferma's Permanent Magnet Source dialog.]]
A permanent magnet is typically a ferromagnetic material with a fixed inherent magnetization vector. As a result, it can be used as a source in an magnetostatic problem. When a permeable material has a permanent magnetization, the following relationship holds:
To add a new permanent magnet source group to a project, right-click on "Permanent Magnets" on the Navigation Tree, and select "Insert New Permanent Magnet Source..." From the Permanent Magnet Source Dialog, you can change the default purple color of the source group or set the values of the relative permeability, Magnetization magnitude and unit direction vector components. The default direction vector is z-directed.
== Computational Domain and Discretization==
