Audible frequency

It would have been if our ears were designed

a) respond to electromagnetic waves and not simply limit itself to mechanical waves.

b) the electromagnetic waves could direct their path in air through the various twists and turns and reach the ear drums.

Drink enough Corona and you can hear lots of frequencies. Or none, if you drink too much.

You might look up the difference between sound waves and electromagnetic waves. Or the difference between what the ears do and what the eyes do.

Most wires and transformers are not constructed like speakers, hence their inability to convert alternating current into audible sound.

Corona is 120Hz. One positive one negative. (100Hz over there)

The premise is false. 50-60Hz is audible. For instance, 60Hz is between B-flat and B just over an octave up from the lowest piano note.

I can B-Flat all the time, sounds better with a corona too..

Typical levels of electrical signal or radio waves are well below the threshhold of hearing, nominally 0 dB or in reality closer to 5 dB or higher.

By comparison, commercial radio stations and TV broadcast signals in my area range from around -60 to -30 dB. Electrical hum at 60 hz or 120 hz is at a similarly low level probably below -30 dB: it can be heard with a gauss pickup and amplifier.

As already been indicated, you mixed up the frequency of electrical signals and the frequency of sound wave. Electrical signal is never audible unless it is converted to sound wave using the speaker (or some other means). Speaker converts electrical signal to sound wave by creating a vibration in the air corresponding to the signal. If you provide the 50/60 Hz electrical signal to the input of the speaker (make sure the low voltage electrical signal that matches the speaker), the speaker will generate the corresponding 50/60 Hz sound wave in the air and you will be able to hear it.

- MS

Thank you all for clearing my doubt.