  In recent times there has been a renewed interest in the force experienced by
a charged-particle with anomalous magnetic moment in the presence of external
fields. In this paper we address the basic question of the force experienced by
a spin-1/2 point-like charged-particle with magnetic and electric moments in
the presence of space-and time-dependent external electromagnetic fields, when
derived from the Dirac equation {\em via} the Foldy-Wouthuysen transformation
technique. It is interesting to note that the force thus derived differs from
the ones obtained by various other prescriptions.
