Negative charge

Basic Interpretation

[Interpretation] People call the electricity charged by a rubber rod rubbed with fur as negative electricity, which is represented by "-". Corresponds to positive electricity.

[Pronunciation] Fùdiàn

[English] negative electricity

Others

What is negative electricity and positive electricity

Answer: There are only two kinds of electricity in nature. It is stipulated that the electricity carried by the glass rod rubbed with silk is called positive electricity, which is indicated by the symbol "+"; the electricity carried by the rubber rod rubbed with fur is called negative electricity, which is indicated by the symbol "-".

Positive electricity is generated by positive charges, which are the protons that make up the nucleus in an atom; negative electricity is generated by negative charges, which are electrons outside the nucleus in an atom. You can explain the reason why the glass rod rubs the silk to produce positive electricity, and the rubber rod rubs the fur to produce negative electricity. You can think so. In atoms, positively charged nuclei have an attractive effect on negatively charged electrons, but different nuclei have different attracting powers to electrons. Therefore, the nucleus of the atom in the glass rod has a weaker ability to attract electrons than the nucleus of the silk. Therefore, when the glass rod rubs the silk, the electrons will run to the silk, so that the glass rod is positively charged (actually at the same time) , The silk is negatively charged). The same reason can be explained that the rubber rod is negatively charged after rubbing the fur.

The same kind of electricity repels each other, and different kinds of electricity attract each other.