Question

A hollow cylinder of length $L$ and radius $R$ having area $A$ is placed horizontally with its axis parallel to an external field $E$. The electric flux through the surface of the cylinder is :

• A. Zero
• B. $2\pi RLE$
• C. $2\pi R^{2}E$
• D. $E\cdot A$

Answer 1

The correct option is D $E\cdot A$

The electric flux is the measure of the electric field through a given area.

Thus the electric flux through the surface of the cylinder is given by $E\cdot A$.