why transformers hum

The video tutorial explains how magnetic fields in generators push and pull electrons, causing alternating current (AC) and resulting in a sine wave pattern. It discusses the frequency of AC in different regions and how transformers work by transferring voltage between coils. The video also covers transformer efficiency, the role of iron cores, and energy losses due to eddy currents, resistance, and vibrations. Finally, it concludes with a brief thank you to viewers.

What causes the voltage to vary in a generator?

Explain how a transformer works with two coils of wire.

What is the purpose of placing a ferromagnetic iron core between the coils in a transformer?

Describe the losses that occur in a transformer.

What causes the humming sound in transformers?