What is a Electronvolt (eV)?
An electronvolt (eV) is a unit of energy equal to approximately 1.602 × 10⁻¹⁹ joules, the energy gained by an electron through a potential difference of one volt.
Definition
Symbol
eV
Category
Energy
System
SI
1 {unit} = {value} {otherUnit}
1 Electronvolt = 1.60218e-19 Joule (J)
1 Electronvolt = 1.60218e-22 Kilojoule (kJ)
1 Electronvolt = 3.82929e-20 Calorie (cal)
1 Electronvolt = 3.82929e-23 Kilocalorie (kcal)
1 Electronvolt = 4.45049e-23 Watt-hour (Wh)
Common Uses
- Particle physics
- Semiconductor band gaps
- X-ray energy levels
