Quote:
Originally Posted by bodgit
To be really anal about it electrons move about 84mm a day.
|
Its actually impossible to say how fast they move as they don't occupy a well defined space, they have a probabilty of existing in a particular region of space but may actually be anywhere in the universe. Also, uncertainty principle states that if you do know their exact whereabouts you know very little about how fast they are going (and vice-versa).
But in the real, macroscopic world, a wire of a few mm more or less will have no noticeable effect. As said, there is an argument for keeping them the same length, but I can't see an argument for keeping them the same length as they came with out of the box.