Find the electric field intensity due to a positively charged conducting cylinder with radius 1 cm and surface charge density `10^(-9)C//m^(2)`, at a point at a distance of 2 m from the axis of cylinder. The dielectric constant of the medium surrounding the cylinder is 2.

Options

A. `0.28V//m`
B. `1.28V//m`
C. `2.28V//m`
D. `1.00V//m`

Answer

A

Explanation

`E=(sigmaR)/(epsi_(0)kr)=(10^(-9)xx1xx10^(-12))/(8.85xx10^(-12)xx2xx2)=0.28V//m.`