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## Homework Statement

An infinitly long conducting cylinder of Radius R carries a unifom surface charge of (lambda per unit length) determine the electric field strength inside and outside the cylinder

## Homework Equations

integral (E.ds)= q/e0

## The Attempt at a Solution

im not really sure what to do at all i tried simply differentiating the equation above and substituting lambda in for q but im pretty sure thats not right...