Définition ampere dans le Dictionnaire anglais Collins English Dictionary & Thesaurus

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Ampère
ampere-hour
ampere-turn
ampersand

ampere n

1 the basic SI unit of electric current; the constant current that, when maintained in two parallel conductors of infinite length and negligible cross section placed 1 metre apart in free space, produces a force of 2x10--7 newton per metre between them. 1 ampere is equivalent to 1 coulomb per second

2 a former unit of electric current (international ampere); the current that, when passed through a solution of silver nitrate, deposits silver at the rate of 0.001118 gram per second. 1 international ampere equals 0.999835 ampere, (Abbrev) amp (Symbol) A (C19: named after A. M. Ampère)

Ampère (French) n André Mari (<PH:B><PH:d><PH:r><PH:e> <PH:m><PH:a><PH:r><PH:i>). 1775--1836, French physicist and mathematician, who made major discoveries in the fields of magnetism and electricity

ampere-hour n
a practical unit of quantity of electricity; the quantity that flows in one hour through a conductor carrying a current of 1 ampere. 1 ampere-hour is equivalent to 3600 coulombs, (Abbrev.) a.h

ampere-turn n
a unit of magnetomotive force; the magnetomotive force produced by a current of 1 ampere passing through one complete turn of a coil. 1 ampere-turn is equivalent to 4<Gpi>/10 or 1.257 gilberts, (Abbrevs.) At, A

volt-ampere n the product of the potential in volts across an electrical circuit and the resultant current in amperes, (Abbrev.) VA

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