# ampere

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## am·pere

(ăm′pîr′)*n.*

*Abbr.*

**A**

The basic unit of electric current, equal to one coulomb per second and equivalent to the current, flowing in two straight parallel wires of negligible cross section separated by a distance of one meter, that produces a force between the wires of 2.0 × 10

^{-7}newtons per meter of length. The value of an ampere in the International System differs very slightly from that in the meter-kilogram-second-ampere system of units. See Table at measurement.[After André Marie

**Ampère**.]## Ampère

(ˈæmpɛə;*French*ɑ̃pɛr)

*n*

(Biography)

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

(ˈæmpɛə)*n*

**1.**(Units) 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

**2.**(Units) 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

**amp**Symbol:

**A**

[C19: named after André Marie Ampère]

## am•pere

(ˈæm pɪər, æmˈpɪər)*n.*

the SI unit of electrical current, equal to a constant current that would produce a force of 2 x 10

^{−7}newton per meter of length when maintained in two straight parallel conductors of infinite length and negligible circular cross section and placed one meter apart in a vacuum.*Abbr.:*A, amp.[1881; after A. M. Ampère]

## Am•père

(ˈæm pɪər, æmˈpɪər,*Fr.*ɑ̃ˈpɛr)

*n.*

**André Marie,**1775–1836, French physicist.

## am·pere

(ăm′pîr′) A unit used to measure electric current. Electric current is measured by how great a charge passes a given point in a second. One ampere is equal to a flow of one coulomb per second.

## ampere

**1.**The unit of electric current in the international system.

**2.**(A) The unit for measuring electric current.

ThesaurusAntonymsRelated WordsSynonyms

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Noun | 1. | ampere - a former unit of electric current (slightly smaller than the SI ampere)current unit - a measure of the amount of electric charge flowing past a circuit point at a specific time |

2. | ampere - the basic unit of electric current adopted under the Systeme International d'Unites; "a typical household circuit carries 15 to 50 amps"current unit - a measure of the amount of electric charge flowing past a circuit point at a specific time milliampere, mA - one thousandth of an ampere |

Translations

**ampér**

**ampere**

**amper**

**ampeeri**

**amper**

**amper**

**amper**

**アンペア**

**amper**

**ampér**

**amper**

**ampere**

## ampère

(ˈӕmpeə)*noun*

(

*also***amp**(ӕmp) ) (*often abbreviated to***A***when written*) the unit by which an electric current is measured.Want to thank TFD for its existence? Tell a friend about us, add a link to this page, or visit the webmaster's page for free fun content.

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