Question

How can electric charges produce by rubbing?

Answer 1

The question is based on the concept of static electricity. Static electricity is all about the imbalance between the electric charges of the body, specifically between the positive and negative charges of the body.

Complete step by step answer:
The flow of electrons is the reason behind the electricity. Electric charges are produced by rubbing. This is because of the concept of static electricity. The imbalance between the charges is known as static electricity. The charge imbalance is caused due to physical means. The contact between the two solids is the most common cause of static electricity.
The charges in the solid can build up on the surface of the object until they find a way to be discharged or released. There are several methods that the charges can be discharged. One of the ways is to discharge through a circuit and it is exactly what the lightning strike is. Stationary charges are developed when static electricity is produced in the electric field.
The material surfaces include some of the charges that combine the electricity on the material. The static charges might produce on the surface or the contact with one of the charged bodies or it can also be due to the extra ions that are present in the air.
The static electricity can be generated with the help of the electrostatic generator. There are two methods of producing static charges. They are,
Triboelectric effect.
Electrostatic induction.

Note:
The movement of the protons was not discussed earlier when the static electricity was found. The movement of the protons was not possible. The only possible movement was the electron movement. The electrons in the materials are held extremely loosely, that is the transfer of the electrons takes even through simple contact like rubbing.