A pаrаllel plаte capacitоr оf capacitance C0 has plates оf area A with separation d between them. When it is connected to a battery of voltageV0, it has charge of magnitude Q0 on its plates. It is then disconnected from the battery and the plates are pulled apart to a separation 2d without discharging them. After the plates are 2d apart, the magnitude of the charge on the plates and the potential difference between them are