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-”.

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 |

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

Are you interested in properties of systems of units?

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Last revised: 8 March 2008.