Question

A sphere of radius $1m$ encloses a charge of $5\mu C$. Another charge of $-5\mu C$ is placed inside the sphere. The net electric flux would be :

• A. double
• B. four times
• C. zero
• D. three times

Answer 1

Answer: (C)

zero

We know flux $\varphi =\frac{Q_{enclosed}}{{ϵ}_0}$
as $Q_{enclosed}bysphere=+5\mu c-5\mu c$ $=0$
$\therefore \varphi =0$