ampere

noun am·pere \ ˈam-ˌpir also -ˌper \

Definition of ampere

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 :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

Recent Examples of ampere from the Web

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Origin and Etymology of ampere

André-Marie Ampère


Ampère

biographical name Am·père \ äⁿ-ˈper \

Definition of Ampère

André-Marie 1775–1836 French physicist

AMPERE Defined for English Language Learners

ampere

noun

Definition of ampere for English Language Learners

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


AMPERE Defined for Kids

ampere

noun am·pere \ ˈam-ˌpir \

Definition of ampere for Students

:a unit for measuring the strength of an electric current

Medical Dictionary

ampere

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

medical Definition of ampere

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 :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 play \äⁿ-per\, 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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