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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.
- 1.602176634×10−19 C
- e
The elementary charge, usually denoted by e, is the electric charge carried by a single proton or electron. It is a fundamental physical constant and has a value of 1.602176487 x 10-19C one coulomb. Learn more about the First Law of Electrostatics, the antiquark structure of protons and electrons, and the electric charge of antiparticles.
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.
Electron charge is the fundamental unit of electric charge, equal to 1.602176634 × 10 −19 coulomb. Learn how physicist Robert Millikan measured the charge of single electrons using the oil-drop experiment.
- The Editors of Encyclopaedia Britannica
The elementary charge (the electric charge of the proton) is defined as a fundamental constant in the SI. The value for elementary charge, when expressed in SI units, is exactly 1.602 176 634 × 10 −19 C.
- q
- C = A⋅s
- yes
- coulomb (C)
Charge is measured in Coulombs (C) and can be any multiple of the elementary charge (e), such as 0, +1e, -1e, +2e, etc. e = 1.602176634 × 10-19 Coulombs. So small! A Coulomb equals the charge of about 6.241509×10 18 electrons. That is a lot! Electrons have a charge of −1e and protons have a charge of +1e
Elementary charge (e ) Smallest possible unit of charge. Equal to the charge on one proton or the magnitude of charge on one electron, which is 1.6 × 10 − 19 C . Also called electron charge. Sometimes uses symbol q e . Net charge: Sum of the charges on an object. Coulomb (C) SI unit for electric charge.
