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Homework Help: Electromagnetism - Linear charge

  1. Jun 1, 2017 #1
    1. The problem statement, all variables and given/known data

    q=1.602*10^-19 point 1


    v=1.1*10^6 at point 2

    F=1.44*10^-12 at point 1

    2. Relevant equations

    ΔV=∫E*dr=(1/4πε)*q∫(1/r)=(1/4πε)*q*ln (r2/r1)




    3. The attempt at a solution



    IS this correct?
  2. jcsd
  3. Jun 1, 2017 #2


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    Staff: Mentor

    Your problem statement doesn't actually state a problem. What is to be analyzed or found?

    What is the description of the scenario? Is that vertical charged rectangle meant to represent a short charged plate, part of in infinite plane of charge, a section through a disk of charge, or maybe just a short charged line segment? Something else?

    Please provide a complete problem statement.
  4. Aug 14, 2017 #3
    Sorry but you have to calculate the lenght from position 1 to position 2. It's an infinite linecharge.

    I can't understand where I went wrong in my calculations.
  5. Aug 14, 2017 #4

    rude man

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    Homework Helper
    Gold Member

    It's correct assuming v(L) = 0 and Q = line charge linear density which is usually written as λ and which has dimensions of QL-1, not Q.

    PS did not check math.
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