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| Symbol: |
A |
| Category: |
Electric current |
| SI Equivalent: |
1 A |
| Dimension: |
I |
| System: |
SI |
| Notes |
| SI base unit. Named after A.M. Ampère (1775-1836), the ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed one meter apart in vacuum, would produce between these conductors a force equal to 2x10-7 newton per meter of length [9th CGPM (1948), Resolution 2 and 7]. |
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