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?
Flux, Φ = q/ε0
Where, q = net charged enclosed
ε0 = permittivity of free space
ε0 = 8.85 × 10-12N-1 m-2C2
Since no charge is enclosed by the cube, i.e. q = 0, the net flux through the Cube is zero.
Note: The number of field lines entering the cube is equal to the number of field lines leaving the cube. Hence the net flux becomes zero.
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