A positively charged infinitely long cylinder has a radius of 0.1 m and surface charge density of `8.85xx10^(-12)C//m^(2)`. What is the intensity of the electric field at a point on the surface of the cylinder, if the cylinder is kept in vacuum?

Options

A. 0.5 V/m
B. 1 V/m
C. 1.5 V/m
D. 2 V/m

Answer

B

Explanation

`E=(sigmaR)/(r epsi_(0)k)` but r=R
`therefore E=(sigma)/(epsi_(0)k)=(8.85xx10^(-12))/(8.85xx10^(-12))=1(V)/(m)`