Low-frequency electric fields maintained in a plasma by resistivity (either collisional or wave induced) imply a balance between the momentum transferrd to the electrons by the electric field and that transferred by the resistivity from the electrons to other particle species. As a result, the electrons do not experience a net acceleration due to the electric field. If the plasma contains only one ion species, the momentum balance is the same for the ions, and the ion species is not accelerated either. If a second ion species is present which does not participate in the resistive momentum transfer, it may be accelerated by the electric field while the participating ions experience an acceleration opposite to the field. This mechanism may be applied to the auroral field line plasma in the presence of a current along the magnetic field. Significant resistivity between the electrons and the hydrogen ions may accelerate the oxygen ions provided that the resistivity has the appropriate characteristics. We have used an existing auroral field line plasma simulation to dynamically model this effect. This simulation is a one-dimensional multimoment dynamic model of a three-species plasma (e-, H+, and O+) along about 10 RE of field line above an altitude of 800 km.