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Electron rest mass

2:11

When the mass of an electron becomes equal to thrice its rest mass, its speed is

2:13

The rest energy of an electron is.

3:19

The percentage increase in the rest mass of an electron when it is moving at a speed

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Calculate the energy in MeV equivalent to the rest mass of an electron . Given that the

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Calculate the equivalent energy of electrons and proton at rest. Given that mass of

The electron rest mass is the mass of a stationary electron. It is one of the fundamental constants of physics and is also very important in chemistry because of its relation to the Avogadro constant. It has a value of about 9.109×10−31 kilograms or about 5.486×10−4 atomic mass units, equivalent to an energy of about 8.187×10−14 joules or about 0.5110 MeV.
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  • Terminology 

  • Determination 

  • Relationship to other physical constants