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Definitions for Ampere

[1] the basic unit of electrical current in the International System of Units(SI), equivalent to one coulomb per second, formally defined to be the constant current which if maintained in two straight parallel conductors of infinite length, of negligible circular cross section, and placed one meter apart in vacuum, would produce between these conductors a force equal to 2 × 10−7 newton per meter of length. Abbreviation : A, amp.
[2] An·dré Ma·rie [ahn -drey muh -ree ; French ahn -dr ey ma -r ee ] /ˈɑn dreɪ məˈri; French ɑ̃ˈdreɪ maˈri/ , 1775–1836, French physicist.
[3] 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 2 × 10 –7 newton per metre between them. 1 ampere is equivalent to 1 coulomb per second
[4] 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
[5] André Marie (ɑ̃dre mari). 1775–1836, French physicist and mathematician, who made major discoveries in the fields of magnetism and electricity

Words nearby Ampere

amp., ampas, ampelopsis, ampelos, amperage, ampere, ampere-hour, ampere-turn, amperometric, amperometric titration, ampersand

Origin of Ampere

First recorded in 1881; named after A. M. Ampère

Other words from Ampere

Am·per·i·an [am-peer -ee-uh  n, -per -] /æmˈpɪər i ən, -ˈpɛr-/ , adjective

Word origin for Ampere

C19: named after André Marie Ampère