Final answer:
The electron-volt is a unit of energy, specifically the energy given to a fundamental charge when accelerated through a potential difference of 1 volt, equivalent to 1.6×10^-19 joules.
Step-by-step explanation:
The electron-volt is a unit of energy. It is defined as the amount of energy given to a fundamental charge (such as that of an electron) when it is accelerated through an electric potential difference of 1 volt. In equation form, 1 electron-volt (eV) is equal to the charge of an electron (approximately 1.6×10-19 Coulombs) multiplied by a potential difference of 1 volt, yielding 1.6×10-19 joules (J).