Question

The electric intensity due to an infinite cylinder of radius R and having charge q per unit length at a distance $r\left(r>R\right)$ from its axis is

• A. Directly proportional to $r^2$
• B. Directly proportional to $r^3$
• C. Inversely proportional to $r$
• D. Inversely proportional to $r^2$

Answer 1

The correct option is C Inversely proportional to $r$

$E=\frac{\lambda }{2\pi r{\epsilon }_0}$