As far as I know (which is from a minor amount of personal experience and a major amount from my electrical engineering degree), most humming and crackling sounds are produced by corona discharges and they are generally heard only near overhead power cables operating in high voltage ranges (i.e. 6kV and above). That said, I have heard humming sounds from older tube lights too. Apparently this indicates a faulty choke.
No; you cannot, generally, hear electricity, though you can hear the effects of electricity. Transformers hum, CRTs whine and sizzle, speakers buzz and hiss, and sometimes electricity arcs causing a popping sound as it interacts with the air (very rapidly consuming oxygen and producing light and heat and sound).
Weird superstitions about electricity are not interesting.
"Transformers hum, CRTs whine and sizzle, speakers buzz and hiss, and sometimes electricity arcs causing a popping sound as it interacts with the air"
That is what is interesting, and what I am interested in. What causes those sounds? They obviously aren't weird superstitions, so what is the rational explanation?
What are your thoughts on "hearing electricity"?
Have you ever experienced a similar phenomenon?
What scientific explanations have you found or do you know about?
