rl.bhat said:In an electric field E the electron experiences a force F = e*E
Due to this force the electron moves a distance x, and the work done W = e*x*E.
This work produces kinetic energy in electron = 1/2*m*v^2
If the electric field is uniform Voltage = x*E
Redbelly98 said:No, for relativistic energies the relativistic formulas must be used.
1/2 m v^2 only works in non-relativistic situations.
An electron volt (eV) is a unit of energy commonly used in physics and chemistry. It is defined as the amount of energy gained by a single electron when it moves through a potential difference of one volt.
One electron volt is equivalent to 1.602 x 10^-19 joules. This means that in order to convert from eV to joules, you can simply multiply the value in eV by 1.602 x 10^-19.
No, an electron volt cannot be a negative value. It is a unit of energy and therefore must be a positive value. However, the energy of an electron can be negative if it is in a bound state, but this is not the same as an electron volt.
In particle physics, the electron volt is often used to measure the mass and energy of subatomic particles. For example, the mass of a proton is approximately 938 million electron volts (938 MeV), and the energy of a photon can be measured in electron volts.
No, an electron volt is not a SI (International System of Units) unit. It is considered a non-SI unit, but it is still commonly used in scientific research and calculations, especially in fields such as particle physics and chemistry.