|The unit of electrical potential difference (also called electromotive force) is the volt. It is named after Italian physicist Count Alessandro Giuseppe Antonio Anastasio Volta (February 18, 1745 - March 5, 1827), who developed the first electric battery in 1800.|
One volt of direct current applied across one ohm of resistance causes one ampere of current to flow, and one watt of power to be dissipated across the resistor.
Standard unit = Volt (V)
W = watt, J = joule, A = ampere,
N = newton, s = second, m = meter,
kg = kilogram, C = coulomb
V = W/A = W∙s/A∙s = J/C = N∙m/A∙s = kg∙m2
|1||10-8||3.336 * 10-11|
|108||1||3.336 * 10-3|
|2.998 * 1010||299.8||1|
Note: The prefix "ab" is used to indicate an electromagnetic unit in the centimeter-gram-second system.
The prefix "stat" is used to indicate an electrical unit in the electrostatic centimeter-gram-second system of units.