centimeter-gram-second electromagnetic system of units

Symbol, emu. The units in this system are formed in a manner similar to that of the cgs electrostatic system of units: the unit of electric current was defined using the law that describes the force between current-carrying wires. To do this, the permeability of free space (the magnetic constant, relating the magnetic flux density in a vacuum to the strength of the external magnetic field), was set at 1.

To distinguish cgs electromagnetic units from units in the international system, they were sometimes given the prefix “ab-”.

If you found this page interesting, you might also enjoy learning about another system of units:

British gravitational system
centimeter-gram-second system (cgs)
centimeter-gram-second-biot system
centimeter-gram-second-franklin system
centimeter-gram-second gaussian system
centimeter-gram-second electrostatic system
foot-pound-second system
International system of electrical and magnetic units
meter—kilogram-force—second system
meter-kilogram-ohm-second system
meter-kilogram-second system
millimeter-milligram-second system
SI (the modern "metric system")
Système Usuel

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abampere	current
abcoulomb	electric charge
abfarad	capacitance
abhenry	inductance
abmho	electric conductance
abohm	electric resistance
abvolt	electric potential difference, electromotive force
gauss	magnetic flux density
gilbert	magnetic potential difference, magnetomotive force
maxwell	magnetic flux
oersted	magnetic field strength
stilb	illuminance