| − | '''Electron-Volts''' is a unit of energy equal to that attained by an [[electron]] falling unimpeded through a potential difference of one [[volt]]. | + | '''Electron-Volts''' is a unit of energy equal to that attained by an [[electron]] falling unimpeded through a potential difference of one [[volt]]. It is commonly abbreviated as eV. One electron-Volt is equal to <math>1.602\times10^{-19}</math> [[Joule#Joule|Joule]]. |