Figure 2 shows a cross section through a system that consists of an infinitely long charged rod centred in a thick cylindrical shell of inner radius R and outer radius 2R. The shell is made of a conducting material; the rod is made of a non-conducting material and has a uniform linear charge density, A. The electric field associated with the system is indicated by the red field lines in the figure. For each finite length I of the system, there is a charge -q of on the shell inner surface. (a) For that same finite length I, determine the charge on the rod. (b) For that same finite length I, determine the charge on the shell outer surface. (c) In length I, what is the charge on the shell? (d) What is the ratio of the surface charge density on the shell's inner surface to the surface charge density on the outer surface? Figure 2: An infinitely long charged rod centred in a thick cylindrical conducting shell of inner radius R and outer radius 2R. E charged rod cylindrical shell 2R