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Question: Answered & Verified by Expert
A charge $q$ is placed at the centre of a cube. The electric flux passing through the cube is
PhysicsElectrostaticsCOMEDKCOMEDK 2015
Options:
  • A $\frac{1}{3} \frac{q}{\varepsilon_{0}}$
  • B $\frac{1}{6} \frac{q}{\varepsilon_{0}}$
  • C $\frac{q}{\varepsilon_{0}}$
  • D $\frac{1}{4} \frac{q}{\varepsilon_{0}}$
Solution:
2428 Upvotes Verified Answer
The correct answer is: $\frac{q}{\varepsilon_{0}}$
According to Gauss's law, total electric flux passing through the cube,
$\phi=\frac{\text { total enclosed charge }}{\varepsilon_{0}}=\frac{q}{\varepsilon_{0}}$

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