Ampere
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![Illustration of the definition of the ampere unit](/Images/godic/202501/20/Ampere-def-en.svg5039.png")
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The ampere (SI unit symbol: A), often shortened to "amp", is the SI unit of electric current (dimension symbol: I) and is one of the seven SI base units. It is named after André-Marie Ampère (1775–1836), French mathematician and physicist, considered the father of electrodynamics.