Difference between revisions of "Electronvolt"

Revision as of 10:28, 28 July 2019

An electronvolt (eV) is a unit of energy defined as the energy required to accelerate an electron across a potential difference of one volt.

The electronvolt is denoted with a lower case 'e' followed by an upper case 'V'.

The electronvolt is equal to 1.60x10^-19 Joules (correct to 3 significant figures).

Since the equation linking Energy (E), charge (q) and potential difference (V) is \(E=qV\) then considering the charge on an electron is magnitude of the elementary charge and its energy having been accelerated through a potential difference of 1 volt we can define the energy of a subatomic particle in integers of the elementary charge \(E=eV\) where e is the magnitude of the elementary charge.

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 | style="height:20px; width:100px; text-align:center;" |1 [[Joule]]
-| style="height:20px; width:100px; text-align:center;" |6.25x10<sup>18</sup>[[Electronvolt]]
+| style="height:20px; width:100px; text-align:center;" |6.25x10<sup>18</sup>'''eV'''
 |}