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# ampere

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noun am·pere \ˈam-ˌpir also -ˌper\

## Simple Definition of ampere

• : a unit for measuring the rate at which electric current flows

Source: Merriam-Webster's Learner's Dictionary

## Full Definition of ampere

1. 1 :  the practical meter-kilogram-second unit of electric current that is equivalent to a flow of one coulomb per second or to the steady current produced by one volt applied across a resistance of one ohm

2. 2 :  the base unit of electric current in the International System of Units that is equal to a constant current which when maintained in two straight parallel conductors of infinite length and negligible circular sections one meter apart in a vacuum produces between the conductors a force equal to 2 × 10−7 newton per meter of length

## Examples of ampere in a sentence

1. a current of 15 amperes

## Origin of ampere

André-Marie Ampère

First Known Use: 1881

## Ampère

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biographical name Am·père \äⁿ-ˈper\

## Definition of Ampère

1. André-Marie 1775–1836 Fr. physicist

## ampere

play
noun am·pere \ˈam-ˌpir\

## Definition of ampere for Students

1. :  a unit for measuring the strength of an electric current

## ampere

play play
noun am·pere \ˈam-ˌpi(ə)r also -ˌpe(ə)r\

## Medical Definition of ampere

1. 1:  the practical mks unit of electric current that is equivalent to a flow of one coulomb per second or to the steady current produced by one volt applied across a resistance of one ohm

2. 2:  the base unit of electric current in the International System of Units that is equal to a constant current which when maintained in two straight parallel conductors of infinite length and negligible circular sections one meter apart in a vacuum produces between the conductors a force equal to 2 × 10−7 newton per meter of length

## Biographical Note for ampere

Ampère \äⁿ-per\play , André Marie (1775–1836), French physicist. Ampère is credited with founding, naming, and developing the science of electrodynamics. He was the formulator of two laws in electromagnetism relating magnetic fields to electric currents. The first person to develop techniques for measuring electricity, he invented an instrument that was a forerunner of the galvanometer. In 1881 at the suggestion of Sir Charles Bright, an international congress on electricity adopted ampere as a term for the standard unit of electric current.

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