Electric field intenstity of a cube

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Homework Statement



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??..

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The Attempt at a Solution

 

Answers and Replies

  • #2
Simon Bridge
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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.
 

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