試題詳解

5. A parallel plate capacitor of capacitance C₀ has plates of area A with separation d between them. When it is connected to a battery of voltage V₀ , it has charge of magnitude Q₀ on its plates. While it is connected to the battery, the space between the plates is filled with a material of dielectric constant 3. After the  dielectric is added, the magnitude of the charge on the plates and the potential difference between them are
(A)
(B)
(C)
(D)
(E)