Question

A charge Q is placed a the corner of a cube. The electric flux through all the six faces of the tube is

• A. $\frac{Q}{{\epsilon }_0}$
• B. $\frac{Q}{6{\epsilon }_0}$
• C. $\frac{Q}{8{\epsilon }_0}$
• D. $\frac{Q}{3{\epsilon }_0}$

Answer 1

Answer: (C)

$\frac{Q}{8{\epsilon }_0}$

The charge is kept at a corner of a cube, so it can be visualized as being at the center of a cube of a double its side i. e., comprising of 8 such cubes kept besides and top of each other.

The flux to each small cube is $\frac{Q}{8{\epsilon }_0}$.

The correct option is C.