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Homework Help: Homework, electric field strength at centre of a square

  1. Oct 8, 2014 #1


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    1. The problem statement, all variables and given/known data
    4 charges of +5µC, +3µC, -4µC and +2µC form the 4 points of a square of side length 2m. Calculate the field strength and potential at the centre of the square.

    2. Relevant equations
    F=1/4π[PLAIN]http://upload.wikimedia.org/math/d/3/c/d3c305fc416b971cd6d284564e51bf85.png[SUB]0[/SUB] [Broken] X Q1Q2/r2
    E= Q/4π[PLAIN]http://upload.wikimedia.org/math/d/3/c/d3c305fc416b971cd6d284564e51bf85.png[SUB]0[/SUB] [Broken]r2
    3. The attempt at a solution
    Last edited by a moderator: May 7, 2017
  2. jcsd
  3. Oct 8, 2014 #2


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    Staff: Mentor

    Welcome to the PF. Keep going! Use those equations and draw a figure... :-)
    Last edited by a moderator: May 7, 2017
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