# Abvolt

From Knowino

The **abvolt** (symbol abV) is the unit of electric potential difference (electromotive force) in the cgs-emu (centimeter-gram-second electromagnetic) system of units.

The abvolt is defined as the difference in electric potential between two points in a conductor carrying a constant current of 1 abampere ( = 10 A) when the power dissipated between them is equal to 1 erg ( = 10^{−7} joule) per second.
From

with power *P* in erg/s and electric current *i* in abA, we obtain by dimensional analysis

- 1 abvolt = 1 erg/(s⋅abA) = 10
^{−7}J/(10⋅s⋅A) = 1⋅10^{−8}J/C = 1⋅10^{−8}volt.