Which of the following is not a component of a transformer?

The correct answer is that electrical coupling is not a component of a transformer. A transformer fundamentally consists of specific key components that play distinct roles in its operation, which include the core, primary winding, and secondary winding.

The core is essential as it provides a path for the magnetic flux created by the alternating current in the windings. The primary winding is where the input voltage is connected, and it transforms electrical energy into a magnetic field. The secondary winding is where the transformed voltage is induced, allowing for the output of electrical energy.

Electrical coupling, on the other hand, is a term that refers to the interaction between circuits or components in the context of electrical systems, but it is not a physical component of a transformer itself. Instead, electrical coupling in a transformer highlights how energy is transferred between the primary and secondary windings through mutual induction. This distinction confirms that electrical coupling is a characteristic of the transformer’s function rather than a structural element.