Electric charge conversation means that the net electric charge in an isolated system remains constant over time. In other words, the total amount of positive charge and the total amount of negative charge in a closed system can neither be created nor destroyed; it can only be redistributed.

Mathematically, electric charge conservation can be expressed as

$$\Delta Q = 0$$

Where Q is the total charge of the system, and \(\Delta Q\) is the change in charge over a certain time interval.

A consequence of charge conservation is that for any given physical process, the sum of all positive charges at any instant must be equal to the sum of all negative charges, no matter how the individual charges move or are rearranged in space.

Electric charge conservation plays a crucial role in various electric and particle physics phenomenon, and it's one of the fundamental conservation laws of nature. It has broad implications across different fields including electronics, electromagnetism, chemistry, and particle physics.