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A very long, solid insulating cylinder w...

A very long, solid insulating cylinder with radius R has a cylindrical hole with radius a bored along its entire length. The axis of the hole is at a distance b from the axis of the cylinder, where `altbltR` (as shown in figure). The solid material of the cylinder has a uniform volume charge density `rho`. Find the magnitude and direction of the electric field inside the hole, and show that this is uniform over the entire hole.
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