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Homework Help: Compute potential differnce between two points due to constant electrostatic field?

  1. Mar 31, 2012 #1
    1. The problem statement, all variables and given/known data[/b]
    Problem - Compute the potential difference between the points (4,6,3) and (8,1,6) due to a constant electrostatic field given by E = (2 ihat + 7 jhat + 12 khat) N/C. distance in meters


    2. Relevant equations

    Fq = qE

    Vr = Keq1/(r-r1)

    Fq = (Kq1 (r-r1))/(r-r1)3

    3. The attempt at a solution

    I can't figure out how to solve.

    Currently I combined the two points to find the vector magnitude and then found the maginute of E. then plugged into the Fq = qE problem to solve for q. Then plugged into the Vr equation. I don't believe this is correct though and should be using the third equation as well.
     
  2. jcsd
  3. Mar 31, 2012 #2
    Re: Compute potential differnce between two points due to constant electrostatic fiel

    Try
    [tex] V = - \int \mathbf{E} \cdot d \mathbf{l}[/tex]
     
  4. Mar 31, 2012 #3
    Re: Compute potential differnce between two points due to constant electrostatic fiel

    The class is not calculus based. It has to be worked by algebra.
     
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