Zap Through the Electrical IBEW Test 2025 – Light Up Your Career Path!

The correct answer focuses on the two primary functional parts involved in the operation of a transformer. A transformer works on the principle of electromagnetic induction, and its main components are indeed the primary coil and the secondary coil.

The primary coil is the winding through which the input voltage is applied. It creates a magnetic field when an alternating current (AC) flows through it. This magnetic field then induces a voltage in the secondary coil, which is the winding where the output voltage is obtained. The interaction between these two coils is what allows the transformer to step up or step down voltage as necessary for different applications.

In transformers, the primary and secondary coils are typically wrapped around a core, which enhances the magnetic coupling between them, but the core itself isn’t counted among the primary components in this context. Understanding the roles and functions of these coils is crucial for grasping how transformers operate and how they are utilized in electrical systems.