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Ampere's Law, which is also known as the Ampere-LaPlace Law, relates electrical and mechanical phenomena by quantifying the force between two, parallel, current-carrying conductors in free space (i.e. in a vacuum).

Its precise statement involves an equation that utilises various Greek symbols, which cannot be expressed here as far as I am aware -so, I suggest checking it out elsewhere on the internet.

Ampere's Law, therefore, leads to the SI definition of the ampere, which states that an ampere is 'that constant current which, if maintained in two straight parallel conductors of infinite length, placed one metre apart in a vacuum, will develop between them a force equal to 2 x 10-7 newtons per metre length'.

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13y ago

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