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Problem 1: Field and Potential I Imagine a spherically symmetric charge density p(r) = Cr for r a. a) Find the electric field E(r) and potential V(r). Are they continuous at r = a? b) Suppose additional charge is placed uniformly on the surface at r = a with surface charge density o. Find the electric field E(r) and potential V(r). Are they continuous at r = a? Explain