KNOWPIA
WELCOME TO KNOWPIA

abvolt | |
---|---|

Unit system | CGS-EMU |

Unit of | electric potential, electric potential difference (voltage), and electromotive force |

Symbol | abV |

Named after | Alessandro Volta |

In CGS base units | g^{1/2}·cm^{3/2}/s^{2} ^{[1]}^{:25} |

Conversions | |

1 abV in ... | ... corresponds to ... |

SI derived units | 10^{−8} volt |

CGS-ESU | 1/c_{cgs} statvolt^{[Note 1]} |

The **abvolt** (abV) is the unit of potential difference in the CGS-EMU system of units. It corresponds to 10^{−8} volt in the SI system and 1/*c*_{cgs} statvolt ≈ 3.3356×10^{−11} statvolt in the CGS-ESU system.^{[Note 1]}

A potential difference of 1 abV will drive a current of one abampere through a resistance of one abohm.

In most practical applications, the volt and its multiples are preferred. The national standard in the United States ^{[2]} deprecates the use of the abvolt, suggesting the use of volts instead.

The name abvolt was introduced by Kennelly in 1903 as a short name for the long name *(absolute) electromagnetic cgs unit of e.m.f.* that was in use since the adoption of the cgs system in 1875.^{[3]} The abvolt was coherent with the CGS-EMU system, in contrast to the volt, the practical unit of e.m.f. that had been adopted too in 1875.

- ^
^{a}^{b}The dimensionless constant*c*_{cgs}= 2.99792458×10^{10}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.**^**IEEE/ASTM SI 10-2002. American National Standard for Use of the International System of Units (SI): The Modern Metric System. New York: IEEE, 30 December 2002, Section 3.3.3.**^**A.E. Kennelly (1903) "Magnetic units and other subjects that might occupy attention at the next international electrical congress"*20th Annual Convention of the American Institute of Electrical Engineers, 1903*