What does an inductor primarily do in an electrical circuit?

An inductor primarily stores electrical energy in a magnetic field when current flows through it. This is due to the fundamental principle of inductance, where a change in current creates a change in magnetic field around the inductor. As current increases, the magnetic field builds up, and when the current decreases, the magnetic field collapses and induces a voltage that opposes the change. This property allows inductors to temporarily store energy, which can then be released back into the circuit when needed.

Inductors play a critical role in applications such as filters, oscillators, and energy storage devices, enabling them to help manage the flow of current and enhance circuit functionality. Understanding this core operation is essential for those studying electronics as it reflects on how inductors interact within various circuit designs.