A parallel plate capacitor of capacitance $C_i$ has plates of area A with separation d between them. When it is connected to a battery of voltage $V_{,}$ it has charge of magnitude $Q_0$ on its plates. It is then disconnected from the battery and the spare between the plates is fulled with a material of dielectric constant $3.$ After the dielectric is added, the magnitudes of the capacitance and the potential difference between the plates are