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|Unit system||CGS-ESU and gaussian|
|Unit of||electric potential, electric potential difference (voltage), and electromotive force|
|Named after||Alessandro Volta|
|In CGS base units||g1/2·cm1/2/s :26|
|1 statV in ...||... corresponds to ...|
|SI derived units||ccgs 10−8 volt|
=299.792458 volt[Note 1]
The statvolt is a unit of voltage and electrical potential used in the CGS-ESU and gaussian systems of units. In terms of its relation to the SI units, one statvolt corresponds to exactly ccgs 10−8 volt,[Note 1] i.e. to 299.792458 volts.
The statvolt is also defined in the CGS system as 1 erg / statcoulomb.
It is a useful unit for electromagnetism because, in a vacuum, an electric field of one statvolt per centimetre has the same energy density as a magnetic field of one gauss. Likewise, a plane wave propagating in a vacuum has perpendicular electric and magnetic fields such that for every gauss of magnetic field intensity there is one statvolt/cm of electric field intensity.
In the CGS-EMU system, the unit of voltage is the abvolt.
- ^ a b The dimensionless constant ccgs = 2.99792458×1010 is numerically equal to the magnitude of the speed of light when the latter is expressed in cm/s.
- ^ Gyllenbok, Jan (2018). Encyclopaedia of Historical Metrology, Weights, and Measures: Volume 1. Birkhäuser. ISBN 978-3-319-57598-8.
- ^ a b c Purcell, Edward (2011). Electricity and Magnetism (Second ed.). Cambridge: Cambridge University Press. pp. 474–475. ISBN 9781107013605.