Question

A short electric dipole (which consists of two point charges $+qand-q$) is placed at the centre O and inside a large cube (ABCDEFGH) of length L, as shown in figure. The electric flux, emanating through the cube is:

• A. $q/4\pi {\epsilon }_{0}L$
• B. Zero
• C. $q/2\pi {\epsilon }_{0}L$
• D. $q/3\pi {\epsilon }_{0}L$

Answer 1

Answer: (B)

Zero

Total charge enclosed inside the cube $=0$. SO, the electric flux$=\frac{q}{{ϵ}_0}=0$