In the following exercise:
We are asked to calculate the electric field at a certain distance from an exis where a rod is located. Previously, we are asked to calculate the charge density a cylindrical thin conductor of radius R which axix happens to meet the already named.
I calculated the electric field using Gauss' theorem and taking only into account the rod, and I obtained the electric field of the solution.
So that is my question, why does the cylindrical crust do not influence the electric field? Is it because the crust is conductive?