›› Measurement unit: ampere

Full name: ampere

Plural form: amperes

Symbol: A

Alternate spelling: amps

Category type: electric current

Scale factor: 1

›› SI unit: ampere

The SI base unit for electric current is the ampere.

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›› Definition: Amp

In physics, the ampere (symbol: A, often informally abbreviated to amp) is the SI base unit used to measure electrical currents. The present definition, adopted by the 9th CGPM in 1948 is: "one ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed one metre apart in vacuum, would produce between these conductors a force equal to 2 10-7 newton per metre of length".

›› Sample conversions: ampere

ampere to electrostatic unit of current
ampere to coulomb/second
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