Electromagnetic components are devices that utilize electromagnetic fields to perform various functions. These components include items like inductors, capacitors, and transformers, which are essential in electrical circuits. They help in storing energy, filtering signals, and converting voltage levels, making them crucial for the operation of electronic devices. These components work based on the principles of electromagnetism, which is the interaction between electric currents and magnetic fields. By manipulating these fields, electromagnetic components can control the flow of electricity, enabling the functioning of everything from simple household appliances to complex communication systems.