## BIG IDEA - Electronvolt ($eV$ ) is a unit of [[Energy|energy]]. - One $eV$ is defined as the energy gained by one electron that has been accelerated across a potential difference of 1 v in a vacuum. - Symbol $eV$ $e \cdot 1v = 1.60 x 10^{-19} C \cdot 1v = 1.60 x 10^{-19} J$ <font color="#f79646">THEREFORE</font> 1 $eV$ = $1.60 x 10^{-19} J$ --- Return [[Home|Home]] | [[SI units]] | [[Base Units]] | [[Energy]] | [[joule]] | [[Photoelectric Effect]]