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Consider a long cylinder uniformly charged throughout its volume apart from an off-center cylindirical cavity parallel...

Consider a long cylinder uniformly charged throughout its volume apart from an off-center cylindirical cavity parallel to the axis of the cylinder. The charge density is ρ, the Radius of the cylinder is a, the Radius of the cavity is b, and the distance between the axes is d ( d+b < a and b < d). Find the potential difference between point 0 on the axis of the cylinder and point A on its surface furthest the cavity.

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