Which component is used to store electrical charge?

The component that is used to store electrical charge is the capacitor. Capacitors function by accumulating electrical energy in an electric field, which allows them to hold a charge. When voltage is applied across the capacitor's terminals, it causes a separation of electric charge, leading to the storage of energy.

Capacitors are widely used in electronic circuits for various purposes, such as filtering, timing applications, and coupling signals. Their ability to quickly release stored energy when needed makes them essential for many applications in electrical and electronic systems.

Other components, such as resistors, inductors, and transistors, serve different functions. Resistors limit current and dissipate electrical energy as heat, inductors store energy in a magnetic field rather than an electric field, and transistors act as switches or amplifiers for electrical signals. Understanding these distinctions helps clarify the specific role of capacitors in electrical circuits.