Q. What is the flux through a cube of side a if a point charge of q is at one of its corner?

3521 207 AIPMTAIPMT 2012Electrostatic Potential and Capacitance Report Error

A

$\frac{2 q}{ε _{0}}$

8%

B

$\frac{q}{8 ε _{0}}$

74%

C

$\frac{q}{ε _{0}}$

9%

D

$\frac{q}{2 ε _{0}} 6 a^{2}$

9%

Solution:

flux $ϕ = \frac{q}{8 ϵ _{0}}$