Question

The total electric flux through a cube when a charge 8q is placed at one corner of the cube is

• A. ${\epsilon }_{0}q$
• B. $\frac{{\epsilon }_0}{q}$
• C. $4\pi {\epsilon }_0$
• D. $\frac{q}{4\pi {\epsilon }_0}$
• E. $\frac{q}{{\epsilon }_0}$

Answer 1

Answer: (E)

Given, $Q=8q$ (at corner of cube)
since, $\varphi$ cat corner of cube) $=Q/8{ϵ}_0$
$\varphi =\frac{8q}{8{ϵ}_0}$
$\Rightarrow \varphi =q/{\epsilon }_0$