The abvolt (abV) is one option for the unit of potential difference in the EMU-CGS system of units, and is equal to 10−8 volts in the SI system.

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 [1] deprecates the use of the abvolt, suggesting the use of volts instead.

The other option in the cgs system is the statvolt.

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.[2] The abvolt was coherent with the emu-cgs system, in contrast to the volt, the practical unit of e.m.f. that had been adopted too in 1875.


  1. 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.
  2. 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
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