Two conductors connected in series are known as a “turn” in the context of electrical engineering and specifically in the design and construction of transformers. A transformer is a passive component that transfers electrical energy from one circuit to another, or from multiple circuits. A transformer uses two or more coils of wire, called the primary winding and the secondary winding, that are wrapped around a core made of a magnetic material.
The number of turns in the primary winding is different from the number of turns in the secondary winding, this difference in the number of turns causes the voltage in the primary winding to be different from the voltage in the secondary winding. The primary winding is connected to the power source, and the secondary winding is connected to the load.
When two conductors are connected in series, it means that the end of one conductor is connected to the beginning of another conductor. This forms a single continuous path for electrical current to flow through. The current flowing through each conductor is the same, and the voltage across the two conductors is added together.