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Electric field in resistors

  1. Nov 8, 2015 #1
    1. The problem statement, all variables and given/known data
    Do resistors have electric fields inside them? I'm confused because we never say voltage IN resistors. So I was wondering if charges are moving in a circuit with a resistor, would the flow of charge create E fields along the surface of resistors rather than inside?

    2. Relevant equations


    3. The attempt at a solution
     
  2. jcsd
  3. Nov 8, 2015 #2
    Yes, they do. Voltage ( better to say potential difference) is always caused due to accumulation of charges. The potential difference across a resistor is due to the electric field inside it, which is caused by accumulation of charges at its end points.
     
  4. Nov 8, 2015 #3
    So if a resistor had length L, I could use the V=Ed equation to obtain the E field?
     
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