I have a cube with sides l and therfore a total volume of l^3. The E-field is ax + by + cz where a, b, and c are known constants. It says to find the total E-field. The answer is (a + b + c)*l^3. I have no idea how they get this. I tried summing up all of the sides separately bit I kept getting zero. I understand why it is zero and do not understand the answer in the book. How do you do it? Thanks for the help!(adsbygoogle = window.adsbygoogle || []).push({});

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# Homework Help: Gauss' Law Cube w/ 3D vector?

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