In electrical and electronic systems, reactance is the opposition of a circuit element to a change of electric current or voltage, due to that
Hartmann number (Ha) is the ratio of electromagnetic force to the viscous force first introduced by Hartmann.
Force exerted by magnetic field
An electromagnet is a type of magnet in which the magnetic field is produced by electric current. The magnetic field disappears when the current is turned
The force created on a straight stationary wire, carrying elecric current, placed in a magnetic field
Torque, moment, or moment of force is the tendency of a force to rotate an object about an axis, fulcrum, or pivot.
Moment of inertia is the mass