Explanation:
The correct answer is B) To store and release electrical energy.
A capacitor is a device that stores electrical energy in an electric field. It consists of two conductive plates separated by an insulating material called the dielectric. When a voltage is applied across the plates, electric charges build up on the plates, creating an electric field. This stored energy can then be released when needed.
Here's a brief explanation of the other options:
A) Resistance is provided by resistors, not capacitors.
C) Amplifying electrical signals is typically done by amplifiers, not capacitors.
D) Converting AC to DC is typically done by rectifiers, not capacitors (although capacitors are often used in conjunction with rectifiers to filter the output).
Capacitors have many applications, including filtering, coupling, and energy storage, but their primary function is to store and release electrical energy.