Question

A cubical region of side a has its centre at the origin. It encloses three fixed point charges, -q at (0, $-\frac{a}{4}$, 0), +3q at (0, 0, 0) and -q at (0, $+\frac{a}{4}$, 0). Choose the correct option(s).

• A. The net electric flux crossing the plane x = $+\frac{a}{2}$ is equal to the net electric flux crossing the plane x = $-\frac{a}{2}$.
• B. The net electric flux crossing the plane y = $+\frac{a}{2}$ is more than the net electric flux crossing the plane y = $-\frac{a}{2}$.
• C. The net electric flux crossing the entire region is $\frac{q}{{\epsilon }_0}$.
• D. The net electric flux crossing the plane z = $+\frac{a}{2}$ is equal to the net electric flux crossing the plane x = $+\frac{a}{2}$.

Answer 1

Answer: (A), (C), (D)