Assigning a Charge Density Excitation for a 2D Electrostatic Solver

This type of excitation defines the volume charge density on an object.

To define the charge density on a dielectric object:

1. Select the object on which you want to apply the excitation.
2. Click Maxwell 2D > Excitations > Assign > Charge Density.
   The Charge Density Excitation dialog box appears.
3. Enter a name for the excitation in the Name box, or accept the default.
4. In the Parameters section, enter the charge density in the Value box. You can enter a numerical value, parameter (design or project variable) or a spatial function.
5. For a spatial function, select the type of coordinate system from the Coordinate System drop-down menu.
6. Optionally, click Use Defaults to revert to the default values in the dialog box.
7. Click OK to assign the excitation to the selected object.