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Electron charge

  1. Jun 2, 2008 #1
    i was stuck on this equation if a current of 2 A flows through a lamp when it is connected by copper wire of cross-sectional area 1 mm2 to the terminals of a battery. how many electrons will leave the negative terminal of the battery in 3 seconds? (obiviously the charge of electrons is e=1.602*10–19 C.
  2. jcsd
  3. Jun 2, 2008 #2

    Vanadium 50

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    What is the definition of an ampere in terms of coulombs and seconds?
  4. Jun 4, 2008 #3
  5. Jun 4, 2008 #4

    Doc Al

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    Right. An Ampere is one Coulomb of charge per second. How many electrons make up one Coulomb?
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