The nature of Lorentz force
1. In the international unit system, the unit of Lorentz force is Newton and the symbol is N.
2. The direction of Lorentz force is always perpendicular to the direction of motion.
3. Lorentz force never does work. (When bound, the Lorentz force's component force can do work, but its total work must be 0.)
4. The Lorentz force does not change the rate and kinetic energy of the moving charge, it can only change the direction of the charge's movement to deflect it.
(Given that there is a question about 4 on the Internet, here is proof: because the Lorentz force is always perpendicular to the direction of movement, the work done by the Lorentz force is 0. According to the kinetic energy theorem: It is not collinear, so it will make a curved movement. If the path passes through a uniform magnetic field, you can know that the Lorentz force provides centripetal force, and the electrons make circular motion