What is the process known as of transferring energy between circuits?

The process of transferring energy between circuits is known as coupling. This term refers to the method by which signals or power can be communicated from one part of an electronic system to another. Coupling can occur in various forms, such as inductive coupling, where energy is transferred through a magnetic field, or capacitive coupling, where energy is transferred through an electric field across a capacitor. The primary goal of coupling is to enable one circuit to influence another without direct electrical connection, maintaining isolation while allowing for the transfer of energy or signals.

Other terms in the choices refer to different concepts in electronics. Amplifying is the process of increasing the amplitude of a signal; coiling is not a standard term used in this context, and while it may refer to the physical arrangement of wire in coils (inductors), it does not directly relate to energy transfer. Rectifying refers to the conversion of alternating current (AC) to direct current (DC) and is not concerned with the broader aspect of transferring energy between circuits.