Question

The electric field intensity at a point on the
Surface of a long, charged Cylinder in air
is 100 V/m. Find the surface charge
density on the cylinder​

Answer 1

Explanation:

E=k×$×A/r^2

E=k×$×4pi×r^2/r^2

E=k×$×4pi

$=E/k×4pi

$=100/9×10^9×4×3.142

$=8.84×10^-10 C/m^2