Rotation Liquid Mercury generated by a magnetic field

In this experiment the mercury is placed inside a wooden disk and on the sides with two aluminum circles and in the center a circular magnet. When current flows through the aluminum conductor, it generates a magnetic field. This condition causes liquid mercury to rotate as it is a very conductive metal. The working voltage is about 2VDC and a current of 27-28 amps, controlled by an inverter. The speed of rotation of mercury depends on the supplied voltage. As the tension increases, the mercury escapes from the bowl.
The system does not work in alternating current.
*The white powder is talc, it makes the movement of mercury visible.

Experiments Robert33