Electric Flux Through a Face of a Cube

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SUMMARY

The electric flux through a face of a cube with a point charge +Q at its center is calculated using the formula Flux = Q/ε. The total electric flux emanating from the charge is Q/ε, and since the cube has six faces, the flux through each face is Q/(6ε). However, the correct answer for the flux through one face, considering symmetry and distribution, is Q/(4ε). This discrepancy arises from the application of Gauss's Law, which dictates that the flux through one face is a quarter of the total flux due to the geometry of the cube.

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  • Concept of symmetry in three-dimensional shapes
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Homework Statement



A point charge +Q is placed at the center of a cube. What is the electric flux through a face of the cube?

Homework Equations



Flux = Q/ε

The Attempt at a Solution



The answer is Q/(4ε), but I thought it should be Q/(6ε) which isn't even an option. I'm I crazy? Since there are six faces and all will get equal flux, and the total flux is Q/ε
 
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Q/6ε is correct.
 

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