Concepts Of Physics MCQ Edition [Volume 2]PhysicsGauss's Law

A charge Q is situated at the centre of a cube. Determine the electric field flux through the six surfaces of the cube.

Options

AQ/ ₀
BQ/2 ₀
C6Q/ ₀
DQ/6 ₀

Correct answer

A. Q/ ₀

Step-by-step solution

According to Gauss's law, the total electric flux through any closed surface is equal to the net charge enclosed by the surface divided by ₀ . The six surfaces of the cube together form a closed Gaussian surface that completely encloses the charge Q placed at its centre. Therefore, the total electric flux through all the six surfaces of the cube is = Q ₀ .

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