  We derive an Ehrenfest theorem for SU(2) lattice gauge theory which, after
Abelian projection, relates the Abelian field strength and a dynamical electric
current and defines these operators for finite lattice spacing. Preliminary
results from the ongoing numerical test of the relation are presented,
including the contributions from gauge fixing and the Faddeev-Popov determinant
(the ghost fields) in the maximally Abelian gauge.
