If one winding of a double winding test coil is a primary winding, what is the other called?

In a double winding test coil, the configuration consists of two distinct windings. One of these windings is designated as the primary winding, which is typically connected to a voltage source. The role of the primary winding is to create the necessary magnetic field for inducing voltage in the other winding. The other winding, which interacts with the primary winding, is referred to as the secondary winding.

The secondary winding serves the purpose of receiving the electromagnetic energy and converting it into a usable output, thereby completing the process of electromagnetic induction. This relationship between the primary and secondary windings is fundamental to the operation of transformers and many electrical measuring instruments.

The terminology used in this context is important as it specifies the roles that each winding plays in the inductive process. The secondary winding is specifically designed to function as the load side of the system, responding to the fluctuations initiated by the primary winding. This distinction aids in understanding how devices relying on inductive coupling function and how they are used in practice.