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Ohm's Law and its implications

  1. Sep 15, 2011 #1
    How can Ohm's law explain the fact that the resistance of a wire depends directly on length and inversely with area?
     
  2. jcsd
  3. Sep 15, 2011 #2

    berkeman

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    Staff: Mentor

    What are your thoughts on the question?
     
  4. Sep 15, 2011 #3
    Well, the voltage has something to do with the length and the current with the time. (V= EL and I = JA). Is resistivity the quotient of E over J?
     
  5. Sep 15, 2011 #4

    berkeman

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    Staff: Mentor

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