ampereˈæm pɪər, æmˈpɪər, Fr. ɑ̃ˈpɛr
ampere (n)
- plural
- amperes
English Definitions:
ampere, international ampere (noun)
a former unit of electric current (slightly smaller than the SI ampere)
ampere, amp, A (noun)
the basic unit of electric current adopted under the Systeme International d'Unites
"a typical household circuit carries 15 to 50 amps"
ampere (Noun)
A unit of electrical current, the standard base unit in the International System of Units. Abbreviation: amp, Symbol: A
Ampere
The ampere, often shortened to Amp, is the SI unit of electric current and is one of the seven SI base units. It is named after André-Marie Ampère, French mathematician and physicist, considered the father of electrodynamics. In practical terms, the ampere is a measure of the amount of electric charge passing a point in an electric circuit per unit time with 6.241 × 1018 electrons, or one coulomb per second constituting one ampere. The practical definition may lead to confusion with the definition of a coulomb, but in practical terms this means that measures of a constant current will be defined in amperes and the flow of charge through a circuit over a period of time will be defined in coulombs. In this way, amperes can be viewed as a flow rate, i.e. number of particles transiting per unit time, and coulombs simply as the number of particles.
Ampere
The ampere (, US: ; symbol: A), often shortened to amp, is the unit of electric current in the International System of Units (SI). One ampere is equal to 1 coulomb or 6.241509074×1018 electrons worth of charge moving past a point in a second. It is named after French mathematician and physicist André-Marie Ampère (1775–1836), considered the father of electromagnetism along with Danish physicist Hans Christian Ørsted. As of the 2019 redefinition of the SI base units, the ampere is defined by fixing the elementary charge e to be exactly 1.602176634×10−19 C (coulomb), which means an ampere is an electrical current equivalent to 1019 elementary charges moving every 1.602176634 seconds or 6.241509074×1018 elementary charges moving in a second. Prior to the redefinition the ampere was defined as the current that would need to be passed through 2 parallel wires 1 metre apart to produce a magnetic force of 2×10−7 newtons per metre. The earlier CGS system had two definitions of current, one essentially the same as the SI's and the other using Coulomb's law as a fundamental relationship, with the unit of charge defined by measuring the force between two charged metal plates. The ampere was then defined as one coulomb of charge per second. In SI, the unit of charge, the coulomb, is defined as the charge carried by one ampere during one second.
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"ampere." Kamus.net. STANDS4 LLC, 2024. Web. 19 Apr. 2024. <https://www.kamus.net/english/ampere>.
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