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Question about the Coulomb?

  1. Feb 13, 2016 #1
    When we say "1 coulomb is equal to charge on 6.24 x 10^18 electrons" does "charge" mean elementary charge or simply -1 ?
     
  2. jcsd
  3. Feb 13, 2016 #2

    fresh_42

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    2017 Award

    Staff: Mentor

    ##1C = 1As##, i.e. Coulomb is defined by Ampère and time. I think a unit of elementary charge is usually defined positive in Coulomb whereas an electron carries the charge ##-1e##. It's a matter of taste and how much is the author willing to confuse his readers.
    In particle physics you have the charge of an electron as elementary charge ##-1##, in electrodynamics its ##C>0##.
     
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