law: Standards of Weights and Measures Act, 1976 
  8. Base unit of
  
  electric current. - 
  (1) The base unit of
  
  electric current shall be the ampere.
  (2) 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 2 x 10
  
  -7 Newton per meter of length.