itseinduktiona

Itseinduktiona, often translated as self-induction, is a fundamental phenomenon in electromagnetism. It occurs in an electrical conductor when the electric current flowing through it changes. This change in current creates a changing magnetic flux through the conductor itself. According to Faraday's law of induction, a changing magnetic flux induces an electromotive force (EMF) within the conductor. This induced EMF is known as the self-induced EMF and always opposes the change in current that produced it. This opposition is a consequence of Lenz's Law.

The property of a circuit or component to oppose changes in the current flowing through it due to self-induction is called inductance, and it is measured in henries (H). A higher inductance means a greater opposition to current changes. Inductance depends on the physical characteristics of the conductor, such as its geometry (shape and size) and the presence of a magnetic core material. For example, a coil of wire, especially one wrapped around a ferromagnetic material, will have a significant inductance.

When an AC current flows through an inductor, the self-induced EMF continuously opposes the alternating current, leading to a phase difference between the voltage across the inductor and the current through it. This inductive reactance, a form of electrical resistance dependent on frequency, affects the overall impedance of the circuit. Self-induction is a key principle behind the operation of inductors, transformers, and various other electrical and electronic devices.