ampere

or am·père

[ am-peer, am-peer ]

/ ˈæm pɪər, æmˈpɪər /

noun Electricity.

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.

Origin of ampere

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

Words nearby ampere

amp, AMPAS, ampelopsis, Ampelos, amperage, ampere, ampere-hour, Ampère's law, ampere-turn, amperometric, amperometric titration

Definition for ampere (2 of 2)

Ampère

[ am-peer; French ahn-per ]

/ ˈæm pɪər; French ɑ̃ˈpɛr /

noun

An·dré Ma·rie

[ahn-drey muh-ree; French ahn-drey ma-ree], /ˈɑn dreɪ məˈri; French ɑ̃ˈdreɪ maˈri/, 1775–1836, French physicist.

OTHER WORDS FROM Ampère

Am·per·i·an

[am-peer-ee-uhn, -per-], /æmˈpɪər i ən, -ˈpɛr-/, adjective

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for ampere

In a Weston voltmeter of regular type, the maximum current required for a full scale-deflection is only 0.01 ampere.
Inventors at Work|George Iles
The volt meter indicates 110 volts and the ammeter shows that one ampere is passing.
The Library of Work and Play: Electricity and Its Everyday Uses|John F. Woodhull
The meter showed that it allowed only one quarter of an ampere to pass.
The Library of Work and Play: Electricity and Its Everyday Uses|John F. Woodhull
Capacities range from 47 ampere-hours to 127 ampere-hours at a one ampere discharge rate.
The Automobile Storage Battery|O. A. Witte

But it is a little different when one is interested in an ampere.
Letters of a Radio-Engineer to His Son|John Mills

British Dictionary definitions for ampere (1 of 2)

ampere

/ (ˈæmpɛə) /

noun

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

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

Abbreviation: ampSymbol: A

Word Origin for ampere

C19: named after André Marie Ampère

British Dictionary definitions for ampere (2 of 2)

Ampère

/ (ˈæmpɛə, French ɑ̃pɛr) /

noun

André Marie (ɑ̃dre mari). 1775–1836, French physicist and mathematician, who made major discoveries in the fields of magnetism and electricity

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for ampere

ampere

[ ăm′pîr′ ]

n.

A unit of electric current in the meter-kilogram-second system, equal to the current that, flowing in two parallel wires one meter apart, produces a force of 2 X 10-7 newtons per meter.

A unit in the International System specified as one International coulomb per second and equal to 0.999835 ampere.

Scientific definitions for ampere (1 of 2)

ampere

[ ăm′pîr′ ]

The SI unit used to measure electric current. Electric current through any given cross-section (such as a cross-section of a wire) may be measured as the amount of electrical charge moving through that cross-section in one second. One ampere is equal to a flow of one coulomb per second, or a flow of 6.28 X 1018 electrons per second.

Scientific definitions for ampere (2 of 2)

Ampère

[ ăm′pîr′, äm-pĕr′ ]

André Marie 1775-1836

French mathematician and physicist who is best known for his analysis of the relationship between magnetic force and electric current. He formulated Ampère's law, which describes the strength of the magnetic field produced by the flow of energy through a conductor. The ampere unit of electric current is named for him.

单词	ampere
释义	ampere or am·père [ am-peer, am-peer ] / ˈæm pɪər, æmˈpɪər / noun Electricity. 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. Origin of ampere First recorded in 1881; named after A. M. Ampère Words nearby ampere amp, AMPAS, ampelopsis, Ampelos, amperage, ampere, ampere-hour, Ampère's law, ampere-turn, amperometric, amperometric titration Definition for ampere (2 of 2) Ampère [ am-peer; French ahn-per ] / ˈæm pɪər; French ɑ̃ˈpɛr / noun An·dré Ma·rie [ahn-drey muh-ree; French ahn-drey ma-ree], /ˈɑn dreɪ məˈri; French ɑ̃ˈdreɪ maˈri/, 1775–1836, French physicist. OTHER WORDS FROM Ampère Am·per·i·an [am-peer-ee-uhn, -per-], /æmˈpɪər i ən, -ˈpɛr-/, adjective Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for ampere In a Weston voltmeter of regular type, the maximum current required for a full scale-deflection is only 0.01 ampere. Inventors at Work\|George Iles The volt meter indicates 110 volts and the ammeter shows that one ampere is passing. The Library of Work and Play: Electricity and Its Everyday Uses\|John F. Woodhull The meter showed that it allowed only one quarter of an ampere to pass. The Library of Work and Play: Electricity and Its Everyday Uses\|John F. Woodhull Capacities range from 47 ampere-hours to 127 ampere-hours at a one ampere discharge rate. The Automobile Storage Battery\|O. A. Witte But it is a little different when one is interested in an ampere. Letters of a Radio-Engineer to His Son\|John Mills British Dictionary definitions for ampere (1 of 2) ampere / (ˈæmpɛə) / noun 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 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 Abbreviation: ampSymbol: A Word Origin for ampere C19: named after André Marie Ampère British Dictionary definitions for ampere (2 of 2) Ampère / (ˈæmpɛə, French ɑ̃pɛr) / noun André Marie (ɑ̃dre mari). 1775–1836, French physicist and mathematician, who made major discoveries in the fields of magnetism and electricity Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for ampere ampere [ ăm′pîr′ ] n. A unit of electric current in the meter-kilogram-second system, equal to the current that, flowing in two parallel wires one meter apart, produces a force of 2 X 10-7 newtons per meter. A unit in the International System specified as one International coulomb per second and equal to 0.999835 ampere. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for ampere (1 of 2) ampere [ ăm′pîr′ ] The SI unit used to measure electric current. Electric current through any given cross-section (such as a cross-section of a wire) may be measured as the amount of electrical charge moving through that cross-section in one second. One ampere is equal to a flow of one coulomb per second, or a flow of 6.28 X 1018 electrons per second. Scientific definitions for ampere (2 of 2) Ampère [ ăm′pîr′, äm-pĕr′ ] André Marie 1775-1836 French mathematician and physicist who is best known for his analysis of the relationship between magnetic force and electric current. He formulated Ampère's law, which describes the strength of the magnetic field produced by the flow of energy through a conductor. The ampere unit of electric current is named for him. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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