Question

What is the net flux of the uniform electric field?

Answer 1

What is the net flux of the uniform electric field of Exercise 1.15 through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes?

Answer 2

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• All the faces of a cube are parallel to the coordinate axes.
• Therefore, the number of field lines entering the cube is equal to the number of field lines piercing out of the cube.
• As a result, net flux through the cube is zero.

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