Magnetostatic Excitations

The following excitations of magnetic fields are available for magnetostatic problems:

Excitation	Type of Excitation
Voltage	The DC voltage on a surface or a sheet object.
Voltage Drop	The voltage drop across a sheet object.
Current Density	The known current density distribution in a conductor. In this case, the current density terminal must also be defined.
Current	The total current in a conductor.
Winding With Current	Current for both a stranded and solid conductor.
Winding With Resistance Voltage Drop	Resistance Voltage Drop for both a stranded and solid conductor.

In addition, permanent magnets serve as sources of magnetic fields.

Warning: If voltage sources are used as excitations, for current to flow, you must define a minimum of two voltage excitations or a voltage drop per conduction path. Each excitation must be set to a different voltage. Current flows from surfaces at higher voltages to surfaces at lower voltages.

Note: When a source conductor touches an outer boundary, Maxwell assumes current will flow perpendicular to the boundary. If you do not want current to cross the outer boundary, an insulating boundary should be used.