The correct answer is: A capacitor consists of two conductors separated by an insulator.
A capacitor is a device that stores electrical energy in an electric field. It is made up of two conductors, called plates, that are separated by an insulator, called a dielectric. The plates are usually made of metal, and the dielectric is usually made of a material such as paper, plastic, or ceramic.
When a capacitor is connected to a battery, the positive terminal of the battery attracts the electrons on the negative plate of the capacitor, and the negative terminal of the battery attracts the electrons on the positive plate of the capacitor. This causes the electrons to move from one plate to the other, creating an electric field between the plates.
The amount of charge that a capacitor can store depends on the capacitance of the capacitor. The capacitance of a capacitor is measured in farads (F). The larger the capacitance, the more charge the capacitor can store.
Capacitors are used in a variety of electronic devices, such as radios, televisions, and computers. They are also used in power supplies and filters.
Here is a brief explanation of each option:
- Option A: Two insulators separated by a conductor. This is not correct because a capacitor must have two conductors.
- Option B: Two conductors separated by an insulator. This is the correct answer because a capacitor must have two conductors that are separated by an insulator.
- Option C: Two insulators only. This is not correct because a capacitor must have two conductors.
- Option D: Two conductors only. This is not correct because a capacitor must have two conductors that are separated by an insulator.