Electron volt

Electron volt (electronvolt) is a unit of energy. eV is the English abbreviation of electron volt, which represents the kinetic energy of an electron (charged electricity) after being accelerated by an electric field of 1 volt (volt).Electron volt is a non-international unit of energy used to measure the energy of microscopic particles. It represents a particle with the same electric quantity as the electric quantity of electrons (such as protons, but due to habit, we call them electron volts) through a potential difference of 1 volt After the electric field is accelerated, the increased energy is called an electron volt[特], Denoted as eV.

1. What is electron volts

Electron volt, English name: electron volt, is a unit of energy, representing the kinetic energy of an electron (a negative charge of 1.6×10-19C) accelerating through a potential difference of 1 volt.

2. The physical meaning of electron volts

Represents the kinetic energy obtained by an electron (with a negative charge of 1.6×10-19C) after being accelerated by a potential difference of 1 volt.

3. Unit conversion of electron volts

Conversion between electron volt and joule unit: 1 eV = 1.6*10E-19 J
The unit conversion process is as follows:

Assuming that there are two points with a potential difference of 1V, then for a particle with one elementary charge, moving from one point to another, the electric field force will do 1eV (electron volts), because the elementary charge = 1.6*10E-19 C, so The electric field force is 1*1.6*10E-19 J.
For the eV unit, it can be seen that it was originally derived from the electric power calculation formula W=qU, the unit of q is e, and the unit of U is V. That is, 1eV means moving an electron by a distance of 1V. Work, 1eV=1.60×10(-19)J.