Question

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

• A. increase four times
• B. be reduced to half
• C. remain the same
• D. be doubled

Answer 1

Answer: (C)

remain the same

Answer 2

$\phi_{\text{ net }}=\frac{2 q }{\epsilon_{0}}$
$\because$ Net flux does not depend on size of Gaussian surface
$\Rightarrow$ Flux remains unchanged.