Using the answer in "Why don't effectors effect effectors?", it is possible to have rigid body objects interact with each other using force fields. However, I would like to do something similar using charge fields.
If I try using this approach with the charge fields, there does not appear to be any forces applied.
Is it possible to use charge fields with rigid objects? If so, how is it done?
The animated result using force fields in Blender 2.76:
This is created using rigid body physics. The cage is a rigid body. Each sphere is a rigid body. An empty is parented to each sphere. Each empty has a force field assigned as shown below.
If the force field is changed to a charge field, the spheres end up on the bottom of the cage.