1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Potential inside a resistor

  1. Apr 23, 2010 #1
    1. The problem statement, all variables and given/known data
    Determine the potential [tex]\phi[/tex] inside a resistor of length l and radius a.
    Also determine the current density J, resistance R, surface and volume charge density Pe and Pes. The resistor is homogeneous.


    2. Relevant equations



    3. The attempt at a solution
    V=Ed, d=l here
    V=El
    E = J/[tex]\sigma[/tex]
    So V= J/[tex]\sigma[/tex] l ?
     

    Attached Files:

  2. jcsd
  3. Apr 25, 2010 #2
  4. Apr 25, 2010 #3

    diazona

    User Avatar
    Homework Helper

    With your attempt so far, you can find the electric field. Then use that to compute the potential difference between one end of the resistor and a point somewhere in the middle. That should get you started.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Potential inside a resistor
Loading...