  A galvanogyroscopic effect which is the rotational analog of the
gravitomagnetic Hall effect has been proposed. As a consequence of Ohm's law in
the rotating frame, the effect of the Coriolis force on the conduction current
is predicted to give rise to an azimuthal potential difference $V_{gg}$ about
$10^{-3}V$ in a spinning rotor carrying radial electric current $i_r$. The
potential difference developed by the galvanogyroscopic effect is proportional
both to angular velocity ${\mathbf \Omega}$ and to the electric current.
