Question 2 (9 points) 2. An infinitely long straight wire is carrying a uniform line charge with a density of p, in a medium with the permittivity of E. (a) Find the electric field at a distance r from the wire. (b) Compute the potential at a distance r from this wire using this electric field. Explain why you cannot set the reference point at co orr = 0. (c) Show that you can get the correct electric field using E = -VV