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## Question Text#

If the capacitance per unit length of a cylindrical capacitor is $$\textrm{ pF/m}$$, what is the ratio of the radii of the two cylinders, $$R_2/R_1$$? In this set-up, $$R_2$$ is the outer cylinder and $$R_1$$ is the inner cylinder.

### pl-submission-panel#

$$R_2/R_1 =$$