Talk:Transmission line
From Academic Kids
Why do high-voltage transmission lines buzz?
- No idea. Try asking at Wikipedia:Reference desk. Optim 19:17, 19 Feb 2004 (UTC)
The current in the line induces a magnetic field, which can exert a force on the wire. The higher the current, the greater the force. In an AC power line, the current reverses itself, which will cause the force to reverse itself, which could cause the wire to vibrate at 60hz, or could cause anything magnetic in the field that is loose to vibrate at 60hz. If it is loose, it is probably attached to something, and probably is smacking it at 60hz as it vibrates. That's what you hear. Transformers are especially bad about this; the windings will buzz if they are not glued in well enough. The more they buzz, the more the glue gets smacked around, and the looser the windings get, the louder the buzzing gets, etc... --ssd 04:38, 24 Jul 2004 (UTC)
