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## Homework Statement

determine the electric flow through a square surface of side 2l due to a load + Q located at a perpendicular distance l from the center of the plane

I really don't know how to answer this question .i need help guys

Thanks

## Homework Equations

## The Attempt at a Solution

I ended up with a doble integral ,which i had to evaluate in order to calculate the flow of electric fiele in the whole square

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