  We analyze the physical processes involved in the Aharonov-Bohm (A-B) and the
Aharonov-Casher (A-C) effects, showing that an incomplete A-B effect knowledge
can lead a totally wrong conclusion on the A-C effect. Based on this we
demonstrate that the Magnus force, the net force, is the only transverse force
on a moving vortex, in analogous to the net charge in A-C effect. This
conclusion has been arrived both theoretically and experimentally.
