Chapter 23, Problem 51P

SSM WWW In Fig. 23-56, a nonconducting spherical shell of inner radius a = 2.00 cm and outer radius b = 2.40 cm has (within its thickness) a positive volume charge density ρ = A/r, where A is a constant and r is the distance from the center of the shell. In addition, a small ball of charge q = 45.0 fC is located at that center. What value should A have if the electric field in the shell (a ≤ r ≤ b) is to be uniform?

Figure 23-56 Problem 51.