Inductors are passive components that store energy in a magnetic field when electrical current flows through them. They are used in applications such as filtering, energy storage, and signal processing, where control over current and voltage is required. Inductors are essential in power supplies, transformers, and communication systems, helping to regulate current flow and maintain stability in circuits.

With their ability to store and release energy, inductors play a crucial role in both AC and DC circuits. From basic power filtering to advanced signal processing, inductors are a vital component in modern electronic systems.