International Electrotechnical Commission
Glossary

EN Ampere
symbol A  
SI unit of electric current, equal to the direct current which, if maintained constant in two straight parallel conductors of infinite length, of circular cross-section with negligible area, and placed 1 metre apart in vacuum, would produce between these conductors a force per length equal to 2 x 10–7 N/m

Note 1 to entry: CGPM definition is as follows: "The ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 metre apart in vacuum, would produce between these conductors a force equal to 2 × 10-7 newton per metre of length."

[SOURCE: IEC 60050-112:2010, 112-02-07]


TC/SC:82Terms     Info     Publications
Published in:IEC 62257-9-5, ed. 2.0 (2013-04) Terms     Info
Reference number:3.10

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