Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Current of Electricity: electrons

  1. Jul 9, 2011 #1
    1. The problem statement, all variables and given/known data
    A wire carries a current of 2.0 A for 1.0 hour. How many electrons pass a point in the wire in this time?
    A
    1.2 x 10-15
    B
    7.2 x 103
    C
    1.3 x 1019
    D
    4.5 x 1022


    2. Relevant equations
    Q=I/t


    3. The attempt at a solution
    Q=2(60)=120
    number of electrons= 120/1.60217733 × 10-19= but the answer isnt any of the options..


    ok i realised my super careless mistake (1hr=60s)
     
    Last edited: Jul 9, 2011
  2. jcsd
  3. Jul 9, 2011 #2

    rl.bhat

    User Avatar
    Homework Helper

    (1hr=60s)

    Is it correct?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook