What is it called when a change of current in a coil induces an EMF in the same coil?

The phenomenon where a change of current in a coil induces an electromotive force (EMF) in the same coil is known as self induction. This occurs when the current flowing through the coil generates a magnetic field, and as this current changes, the magnetic field also changes. According to Faraday's law of electromagnetic induction, this change in magnetic field induces an EMF in the coil that opposes the change in current, a principle articulated by Lenz's law.

Self induction is central to the operation of various electrical devices, including inductors and transformers, enabling them to manage AC (alternating current) signals and store energy in the magnetic field created by the current. This is distinct from mutual induction, where the induced EMF occurs in a separate coil due to a varying current in another coil. The other options, such as capacitance and electromagnetism, refer to different principles in electricity and magnetism, but they do not accurately describe the phenomenon of EMF induction within a single coil caused by its own changing current.