The Layer Current Source is available both for boundaries, and edges. In case of a boundary, it represents a volumetric source of current Qj,v inside the selected layers (SI unit: A/m3).

In case of an edge, it represents an influx of current Qj,s from the edge into the neighboring layers (SI unit: A/m2). In the 3D representation of the layer stack, you could consider it a “boundary current source” applied to one of the boundaries on the outer perimeter of the layer. For more information on the 3D representation of the layer stack, see The Layer Selection Section.

Enter a value or expression for the Current source Qj,v or Qj,s (SI unit: A/m3 or A/m2, respectively). For the boundary feature, the default is 0 A/m3, for an edge feature, the default is 0 A/m2.