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Homework Help: Current through a wire?

  1. Feb 1, 2010 #1
    1. The problem statement, all variables and given/known data

    An electric current of 6 A flows through a 5 mm diameter copper wire with a length of 10 m.
    What is the average number of electrons that flow through a cross section of the wire per second?

    2. Relevant equations

    I=Q/t or I=dQ/dt Maybe, im not sure

    3. The attempt at a solution
    1 Coulomb = 6.24e18
    6*6.24e18
    3.744E19 e/s
     
    Last edited: Feb 1, 2010
  2. jcsd
  3. Feb 1, 2010 #2
    nvm i figured it out thanks anyway!
     
  4. Feb 2, 2010 #3

    Lok

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    Weird as the diameter and length are unnecessary. But thumbs up for solving it!!!
     
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