Solve the all part of given question:
Question: A long non-conducting cylinder has a charge density p = Alpha R, where Alpha = 6.53 C/m4 and r is in meters. Concentric around it is a hollow metallic cylindrical shell.
Part A: What is the direction of the electric field at 15.4 cm from the central axis?
Part B: What is the surface charge density inside the hollow cylinder?
I need help to find the surface charge density inside the hollow cylinder.