Consider the infinitely long solid cylinder shown in the figure above. The cylinder has
a radius R, and has a uniform charge volume density of n1 ρ0 >
0. What is the
voltage difference between a point located a distance of r = R/n2, labeled "b", and the center of
the cylinder, labeled "a"? That is if V(a)-V(b) =
what is n3 ?
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