# Definition:Elementary Charge

## Definition

The elementary charge is the value of the electric charge on a proton.

It is defined as exactly $1.60217 \, 6634 \times 10^{−19}$ coulombs.

### Symbol

The symbol used to denote the elementary charge is usually $\E$ or $e$.

The preferred symbol on $\mathsf{Pr} \infty \mathsf{fWiki}$ is $\E$.

## Technical Note

The $\LaTeX$ code for $\E$ is \E .