Units

Ampere

AM-peer (US); AM-pair (UK)

Citation Formats

General Reference

Science Atlas. "Ampere." Accessed August 30, 2026. https://science.interactiveatlas.org/units/ampere.

APA Style

Science Atlas. (n.d.). Ampere. Retrieved August 30, 2026, from https://science.interactiveatlas.org/units/ampere

BibTeX

@misc{scienceatlas-ampere,
  author = {Science Atlas},
  title = {Ampere},
  year = {2026},
  url = {https://science.interactiveatlas.org/units/ampere},
  note = {Accessed August 30, 2026}
}

The ampere is the base unit of electric current in the International System of Units, named for the French physicist Andre-Marie Ampere. It is defined by fixing the value of the elementary charge, the charge carried by a single proton, at exactly 1.602176634 times ten to the minus nineteen coulombs, so a current of one ampere is the flow of that many elementary charges past a point every second, tying the unit directly to a fixed constant of nature rather than to a laboratory apparatus.

Facts

Symbolthe subject's own account

A 1

Sources

1. International System of Units (Wikipedia)

WikipediaView the Source

Ampere (Wiktionary)

WiktionaryPronunciation section

Quote, Pronunciation section

US IPA am-PIR-like /aem-pihr/; UK IPA am-PAIR-like /aem-pair/, per Wiktionary English pronunciation entries for ampere

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