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Value. 1.602 176 634 × 10−19 C [1] The elementary charge, usually denoted by e, is a fundamental physical constant, defined as the electric charge carried by a single proton or, equivalently, the magnitude of the negative electric charge carried by a single electron, which has charge −1 e. [2] [a]
electron charge, (symbol e), fundamental physical constant expressing the naturally occurring unit of electric charge, equal to 1.602176634 × 10 −19 coulomb. In addition to the electron , all freely existing charged subatomic particles thus far discovered have an electric charge equal to this value or some whole-number multiple of it.
- The Editors of Encyclopaedia Britannica
Electrons have an electric charge of −1.602 176 634 × 10 −19 coulombs, which is used as a standard unit of charge for subatomic particles, and is also called the elementary charge. Within the limits of experimental accuracy, the electron charge is identical to the charge of a proton, but with the opposite sign. [80]
The elementary charge, usually denoted by e, is the electric charge carried by a single proton or, equivalently, the magnitude of the negative electric charge carried by a single electron, which has charge −1 e. This elementary charge is a fundamental physical constant. e = 1.602176487 x 10-19C.
An elementary charge — that of a proton or electron — is approximately equal to 1.6×10-19Coulombs. Unlike protons, electrons can move from atom to atom. If an atom has an equal number of protons and electrons, its net charge is 0.
In physics and chemistry it is common to use the elementary charge ( e) as a unit. Chemistry also uses the Faraday constant, which is the charge of one mole of elementary charges. Overview. Diagram showing field lines and equipotentials around an electron, a negatively charged particle.
Defintion: Elementary Charge. The charge of an electron is sometimes referred to as the elementary charge and usually denoted by \(e\). The elementary charge is a fundamental physical constant and as of May 2019, its value is defined to be exactly \(1.602176634 \times 10^{−19}\, C\).
