Electrostatics The branch of physics that studies electric charges. It has been known since classical physics that certain materials, such as amber, attract lighter particles after being rubbed. Electrostatic phenomena result from the forces that electric charges exert on each other. Such forces are described by Coulomb’s law.
Even though electrostatically induced forces appear to be weak, there are some electrostatic forces such as the one between an electron and a proton, which together make up a hydrogen atom, the gravity acting between them. It is about 36 orders of magnitude stronger than the gravitational force.
Examples of electrostatic phenomena:
- such as a charm in one’s hand after being removed from a package of plastic wrap,
- apparently spontaneous explosion of grain silos,
- Damage to electronic components during manufacturing, and photocopier and laser printer operation.
Electrostatics involves the build-up of charge on the surface of objects due to contact with other surfaces. Although charge exchange occurs when any two surfaces interact and separate, the effects of charge exchange are usually only observed. When at least one surface has a high resistance to electric current. The reason for this is that, the charges of transfer are stuck there for a long time,
so that their effects can be seen. These charges remain on the object until they are either swept to ground or are quickly neutralized by a discharge:
For example: The familiar phenomenon of a static “shock” is due to the neutralization of the charge created by contact with insulated surfaces in the body. ,