Question

There is uniform electric field of $8 \times 10^{3} \hat{i}\,N / C$. What is the net flux (in $SI$ units) of the uniform electric field through a cube of side $0.3\, m$ oriented so that its faces are parallel to the coordinate plane?

• A. $2 \times 8 \times 10^{3}$
• B. $0.3 \times 8 \times 10^{3}$
• C. Zero
• D. $8 \times 10^{6} \times 6$

Answer 1

Answer: (C)

$\vec{E}=8 \times 10^{3} \,\hat{i} \,N / C$ (Uniform)
here $q=0$
So $\phi=0$