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why eletric current is a fundamental physical quantity

Robin Singh , 10 Years ago
Grade 11
anser 2 Answers
Aqsa Ahmed
Almost all physics or engineering textbooks have a table of the SI unitsthat are based on six fundamental quantities. The one that is listed forthe quanity "electric current" is always "ampere". However, usually a fewpages past this fundamental table lies a definition of the ampere. 1 ampere= 1 coulomb/second. This makes it sound more like a derived unit than afundamental unit. It seems more likely that the fundamental quantity"electric current" should be replaced by the quantity "charge" and that thefundamental unit should be the coulomb. While amperes can be broken downinto coulombs and seconds, the coulomb cannot be broken down (except to aspecific count of electrons or protons). Why does there seem to be somecontradiction between the definition of a fundamental quantity (a quantitythat can't be described in terms of another quantity)
Last Activity: 10 Years ago
Tashu
There is a historical answer .In past current can be easily measured but charge cannot .So I felt this might be one of the reasons 
Hope this will help
 
Last Activity: 7 Years ago
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