Electrified liquid mercury does not inherently possess velocity in the sense of motion or speed. Velocity refers to the rate at which an object changes its position in a particular direction. It is a vector quantity that requires both magnitude (speed) and direction.
Liquid mercury, when electrified, may experience the flow of electric current through it. The movement of electrons or charged particles within the mercury creates an electric current, but this current does not impart velocity to the mercury as a whole. The individual electrons within the mercury may have velocity as they move through the liquid, but this does not translate to the overall motion of the mercury itself.
In summary, while electrified liquid mercury can support the flow of electric current, it does not possess velocity in the conventional sense of motion or speed.