Final answer:
When a capacitor is charged, it has equal charges on both plates.The correct option is option a.
Step-by-step explanation:
A capacitor is an electrical device that stores energy in an electric field. When a capacitor is charged, it means that there is a potential difference between its plates and charge has been stored. The charge on a capacitor is distributed between its plates.
Looking at the options given, the correct answer is a) Has equal charges on both plates. When a capacitor is charged, it has an equal amount of positive and negative charge on its plates. This is because the charge separation in a capacitor causes positive charges to accumulate on one plate and negative charges to accumulate on the other plate.