Why Do Power Lines Buzz?

The video explains the buzzing sounds from power lines and transformers. It covers the causes of transformer hum, including stray magnetic fields and magnetostriction, and discusses how the intensity of the hum is related to voltage. The video also explores corona discharge in power lines, which causes a buzzing sound and a bluish glow, similar to a miniature lightning strike.

What causes the buzzing sound produced by Transformers?

What are the two main reasons Transformers hum?

How does the intensity of the humming sound relate to the applied voltage?

Explain the phenomenon of corona discharge in relation to power lines.

Describe the difference between the sounds produced by power lines and Transformers.