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abstraction > mathematical concept > unit > electromagnetic unit > charge unit

charge unit
subject			fact

charge unit	is a unit of charge
	is a kind of electromagnetic unit
unit	has historical origin
	represents

Kinds of charge unit :

• coulomb (8 facts) (C) - The practical and the SI unit of charge. It is the quantity of electricity transported in one second by a current of one ampere. From 1908 to 1948 the international coulomb, derived from the international ampere, was in use. Like the other international units it was replaced by the absolute unit on 1 January 1948. The name coulomb was given to the unit at the first meeting of the IEC in Paris in 1881. At this meeting two of the five units which were given definitions were named after French scientists. These were the ampere (A. M. Ampère 1775-1836) and the coulomb (C. A. Coulomb 1736-1806). (1 international coulomb = 0.99985 absolute coulomb.), Unit of charge.
• electrostatic unit (3 facts) (esu) - Unit of charge defined as the charge which exerts a force of 1 dyne on a charge of equal magnitude at a distance of 1 cm.
• stat-coulomb (4 facts) - Unit of charge in the cgs electrostatic system.