The Surface Current node adds a boundary condition for a surface current density Js.

An externally applied surface current density can be specified directly in the Settings window for the node. Alternatively, the Electric Shielding subnode is available from the context menu (right-click the parent node) or from the Physics toolbar, Attributes menu. Use the subnode to model a thin conductive layer (a layer whose electrical conductivity s is higher than in the surrounding domains). In this case, the electric current flows preferably along the conductive boundary, and the resulting surface current density is automatically incorporated in the parent Surface Current node to act as a source for the magnetic field.

Enter values or expressions for the Surface current density Js0 (SI unit: A/m) coordinates.