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There are two infinite cylindrical shells that are coaxial as shown in the figure
below. The inner cylinder carries linear charge density +A, while the outer
cylinder carries linear charge density -λ. If the compartment in between the
two cylinders is filled by a dielectric constant with a dielectric constant k, what
is the electric potential in the region x<r<y? In this problem, let V(x) = +Vo
X
↑
I
ly
I

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