What is a Negawatt?

People call the electric charge of rubber rods rubbed with fur negative, and use "-".

[fù diàn] Right !

[Interpretation]

What is negative electricity. Positive electricity

Answer: There are only two types of electricity in nature. It has been stipulated that the electric charge of glass rods rubbed with silk is called positive electricity, which is indicated by the symbol "+"; the electric charge of rubber rods rubbed with fur is called negative electricity, which is indicated by "-".

Positive electricity is generated by positive charges, which are the protons that make up the nucleus in the atom; negative electricity is generated by negative charges, and in the atom is the electron outside the nucleus. In simple terms, explain why glass rods rub silk to produce positive electricity, and rubber rods rub fur to produce negative electricity. You can think so. In an atom, positively charged nuclei have the effect of attracting negatively charged electrons, but different atomic nuclei have different abilities to attract electrons. Therefore, the atomic nucleus of the glass rod attracts electrons weaker than the atomic nucleus of silk, so when the glass rod rubs the silk, the electrons will run towards the silk, which will cause the glass rod to be positively charged. , The silk is negatively charged). The same reason has been explained that the rubber rod is negatively charged after the rubber rod rubs the fur.

The same electricity repels each other, and the different electricity attracts each other.