NEET 2000 Physics question
A charge is situated at the corner of a cube, the electric flux passed through all the six faces of the cube is :
Answer: (2)
Solution
A charge placed at a corner of a cube can be thought of as being at the common corner of 8 identical cubes that together enclose it completely. By Gauss's law the total flux from the charge is , shared equally by symmetry among the 8 cubes. Flux through the given cube (all six faces
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