Define one ampere current in terms of force
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1 ampere is defined as the 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 to the power -7 newton per metre of length.
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the constant current which flowing in two infinitely long straight parallel conductor of negligible circular cross section placed in vacuum one metre apart produces between them a force of per meter of their length
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