Question

How does, the electric field (E) between the plates of a charged cylindrical capacitor vary with the distance r from the axis of the cylinder?

• A. $ E\propto \frac{1}{{{r}^{2}}} $
• B. $ E\propto \frac{1}{r} $
• C. $ E\propto {{r}^{2}} $
• D. $ E\propto r $

Answer 1

Answer: (B)

Electric field due to outer plate is zero and so the electric field due to inner cylindrical charged conductor varies inversely as the distance from the axis.