# Electricity

## Electricity of Class 10

Electricity has an important role in modern society. In a span of more than 900 years, electricity convenient and widely used forms of energy in the world. One of the practical advantages of electricity as a form of energy, is that it can readily transmitted over considerable distances with relatively small loss in energy. This makes it possible to supply electricity from a central generating plant to any location.

### It is of two types:

• Static Electricity
• (Current Electricity

### STATIC ELECTRICITY:

A Physical phenomena produced due to charges at rest is known as static electricity.

Ex. When we rub a glass rod with silk the glass rod gets positive charge on it and equal and opposite charge (i.e. the -ve charge) gets developed on the silk. Similarly on a rubbing an ebonite rod with the fur of a cat the ebonite rod get negative charge on it and equal and opposite charge (i.e. the +ve charge) gets developed on the fur of a cat.

### CURRENT ELECTRICITY:

A Physical phenomena produced due to charges in motion is known as current electricity. e.g. electric current we use in our houses is current electricity.

## PROPERTIES OF ELECTRIC CHARGE

The unit of electric charge is coulomb and 1 coulomb is the charge contained in 6 × 10–18 electrons. Unlike (opposite) charges attract each and like (similar) charges repel each other.