A charge of 0.80 nC is placed at the centre of a cube that measures 4.0 m along each edge.What is the electric flux through one face of the cube?
A)90 N . m2/C
B)15 N . m2/C
C)45 N . m2/C
D)23 N . m2/C
E)64 N .m2/C

Question

Quizplus · Accepted Answer

According to Gauss's law, the total electric flux through a closed surface is equal to the charge enclosed divided by the permittivity of free space (ε₀). The total flux through the cube is (0.80 x 10^-9 C) / (8.85 x 10^-12 C²/N·m²) = 90452.54 N·m²/C. Since the cube has 6 faces, the flux through one face is 90452.54 / 6 ≈ 15075.42 N·m²/C, which rounds to 15 N·m²/C.

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