# Definition:Electric Charge

## Definition

Electric charge is a physical quantity of matter which causes it to experience a force when near other electrically charged matter.

It comes in two types, called positive and negative, and they interact as follows:

Two positively charged bodies repel each other.
Two negatively charged bodies repel each other.
Positively charged and negatively charged bodies are attracted to one another.

It is a scalar quantity which has been demonstrated to be quantized.

### Dimension

Electric charge is frequently, at elementary levels at least, considered as one of the fundamental dimensions of physics.

In dimensional analysis it is assigned the symbol $Q$ or $\mathbf Q$.