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funoras
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Homework Statement
In an infinitely large evenly charged dielectric cylinder(charge density is [itex]\rho[/itex] ) there is an infinitely large cylindrical void. Prove that the electric field inside the void is homogenous and find its value. (picture)
http://img513.imageshack.us/img513/5747/61734727.png
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Homework Equations
The Attempt at a Solution
I don't think i can use Gauss law here. Any ideas ?
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