1. Aug 29, 2012 #1

   navya17

   

   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
2. 
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3. Aug 29, 2012 #2

   Simon Bridge

   

   Science Advisor

   Homework Helper

   Gold Member

   2016 Award

   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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