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Homework Help: Electric field intenstity of a cube

  1. Aug 29, 2012 #1

    navya17

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

    Eight point charges of 1ηC each are located at the corners of a cube in free space that is 1m on a side.Find |E| at the centre of a)the cube b)a face c)an edge.
    Can someone please help me with the solution of this problem??..

    2. Relevant equations



    3. The attempt at a solution
     
    navya17, Aug 29, 2012
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  3. Aug 29, 2012 #2

    Simon Bridge

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    Homework Helper

    Welcome to PF;
    It helps if you try to do a bit first, then we can target the specific area you need help.

    To get started - you know the equation for the field due to a single charge - you just add them up for all the charges, remembering that [itex]\vec{E}[/itex] is a vector.
    Hint: you can use the symmetry of the cube, with the fact that each corner has the same charge, to simplify the problem.
     
    Simon Bridge, Aug 29, 2012
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