What is a capacitor?
Correct answer: C. A device that stores electric charge in an electric field
- A. A device that produces audio sounds
- B. A device that dissipates electric charge
- C. A device that stores electric charge in an electric field
- D. A device that emits radio signals
Explanation
A capacitor is a device that stores electric charges in an electric field. A capacitor is an electrical component that stores potential energy. Capacitors hold positive and negative energy on two separate plates separated by an insulator. A capacitor(s) is called cap(s) for short.
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About Electrostatics
Electrostatics describes forces between charges through Coulomb's law, electric fields and field intensity, then uses electric potential to measure energy per unit charge. Capacitors store charge and electrical energy, with capacitance depending on geometry and dielectric material, not simply on the amount of charge present.
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