Final answer:
The charge and potential difference decrease with separation between the plates of a charged capacitor.
Step-by-step explanation:
The following statements are true regarding a charged capacitor:
- I) The charge decreases when the capacitor plates are separated. When the plates of a capacitor are separated, the distance between them increases and the capacitance decreases. Since the charge stored on the capacitor is directly proportional to the capacitance, the charge also decreases.
- III) The potential difference decreases with separation between the plates. The potential difference (voltage) across a capacitor is directly proportional to the charge stored on it and inversely proportional to the capacitance. As the plates are separated, the capacitance decreases, resulting in a decrease in potential difference.