Consider a long cylindrical6 charge distribution of radius R

Consider a long cylindrical6 charge distribution of radius R = 17 cm with a uniform charge density of rho = 11 C/m^3. Find the electric field at a distance r = 35 cm from the axis.

Solution

Electric field outside the cylinder is given by

E = rho*R^2/(2*e0*r) = 11*35^2*10^-4/(2*8.85*10^-12*17*10^-2) = 4.47*10^11 N/C