- Technical Blog From My Notebook

Friday, December 28, 2012

Basic electrical

Introductory concepts and basic elements


Electric current
            Electric current is the rate of flow of electric charges. Electrons are negatively charged particles and their flow in conductors results in electric current.
     By definition, current, 
      If Q is the amount of charge flowing through a conductor in T seconds, then current I is given by the expression,
                                                
      The unit of charge is Coulomb. 1 Coulomb = 6.24×1018 electrons. The unit of current is Ampere(A). 1 Ampere= 1 Coulomb/sec.





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