For the cylinder of uniform charge density in Fig. 2.26:
(a) show that the expression there given for the field inside the cylinder follows from Gauss’s law;
(b) find the potential φ as a function of r, both inside and outside the cylinder, taking φ = 0 at r = 0.
2. Homework Equations
The Attempt at a Solution
I finished part a and got the correct answers. I’m a bit confused about b now. Particularly the bit at the end about taking the potential and radius at 0. Can anybody explain where I start here?
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