Definition: 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 x 10–7 newton per metre of length. (The International Bureau of Weights and Measures)
The accepted standard unit used for measuring how fast an electric current flows is an example of an ampere.
Other Word Forms
Origin of ampere
- After André Marie Ampère
From American Heritage Dictionary of the English Language, 5th Edition
- Named after the French physicist André-Marie Ampère.