Question

Two capacitors have the same plate separation. However, one has square plates, while the other has circular plates. The square plates are a length L on each side, and the diameter of the circular plate is L.

(a) If the same dielectric material were between the plates in each capacitor, which one would have the greater capacitance? Explain.

(b) By putting different dielectric materials between the capacitor plates, we can make the two capacitors have the same capacitance. Which capacitor should contain the dielectric material with the greater dielectric constant? Explain.