Note: The Lorentz force does not compute the correct force on objects that are assigned materials with a relative permeability greater than one (that is, materials where m ≠ m₀). To find the force on these objects, use virtual force.

Note: For PCB applications, the parameter force calculated by using virtual force is not accurate if the mesh in air gaps between two layers is not fine enough. It is strongly recommended to compute parameter forces on conducting objects by using the Lorentz force option.