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What is the net flux of the uniform elec...

What is the net flux of the uniform electric field of Exercise - 15 through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes?

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As we know that the number of lines entering in the cube is the same as that the number of lines leaving the cube. So, no flux si remained on the cube and hence, the net flux over the cube is zero.
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