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Question: Answered & Verified by Expert
A charge $q$ is placed at the centre of a cube. Then the flux passing through one face of cube will be
PhysicsElectrostaticsJEE Main
Options:
  • A $\frac{q}{\varepsilon_0}$
  • B $\frac{q}{2 \varepsilon_0}$
  • C $\frac{q}{4 \varepsilon_0}$
  • D $\frac{q}{6 \varepsilon_0}$
Solution:
2354 Upvotes Verified Answer
The correct answer is: $\frac{q}{6 \varepsilon_0}$
Net flux through the cube $\phi_{\text {net }}=\frac{Q}{\varepsilon_0}$; so flux through one face $\phi_{\text {faxe }}=\frac{q}{6 \varepsilon_0}$

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