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NEET2001PhysicsElectrostaticsActual

A charge is placed at the centre of cube of side a then flux linked with one of its given faces will be

Options

  1. AQ ₀
  2. BQ 6 ₀
  3. CQ ₀ a^2
  4. DQ 4 ₀ a^2 .

Correct answer

B. Q 6 ₀

Step-by-step solution

Gauss's law tells that the total flux through an area enclosing a charge Q is Q ₀ . Now as the cube is having six faces and as we can assume a symmetrical distribution of fluxes among its faces, the flux associated with one of its faces is Q 6 ₀ .

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