A charge $Q$ is enclosed by a Gaussian spherical surface of radius $R$. If the radius is doubled, then the…

A charge $Q$ is enclosed by a Gaussian spherical surface of radius $R$. If the radius is doubled, then the outward electric flux will
  1. be reduced to half
  2. remain the same
  3. be doubled
  4. increase four times

Solution

Total flux $=\frac{\text { Net enclosed charge }}{\varepsilon_0}$ Hence, we can say the electric flux depends only on net enclosed charge by surface. :

Asked in: NEET 2011 (Screening)

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