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Question 31427
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Electrostatics: Electric Flux MCQ

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Electric FluxMediumQuestion 31427

Question

A charge q is at centre of a cube. Flux through each face is:
  1. A
    q/ε₀
  2. B
    q/(6ε₀)
    Correct
  3. C
    q/(8ε₀)
  4. D
    Zero

Correct answer

q/(6ε₀)

Explanation

Total flux = q/ε₀ by Gauss's law. By symmetry, each of 6 faces gets equal flux: q/(6ε₀).

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