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Standard: SI base unit
Quantity: Electric current
Symbol: A
Named after: André-Marie Ampère

The ampere or amp (Symbol: A) is the standard unit of electric current. An electric current of one amp is one coulomb per second. The amp is named after André-Marie Ampère who studied electromagnetism.

The ampere is defined so the elementary charge e is 1.602 176 634 × 10−19 C or A•s.[1]


  1. "ampere (A)". Retrieved 21 May 2019. 

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