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Registered Member #191
Joined: Fri Feb 17 2006, 02:01AM
Location: Esbjerg Denmark
Posts: 720
The is a sea of free electrons in the metal structure. B field pushes them around to create E field. Have enough E field and you rip electrons off air molecules.
Registered Member #580
Joined: Mon Mar 12 2007, 03:17PM
Location: Melbourne, Australia
Posts: 410
As you move the move a magnet around a conductor (eg a copper wire) it will shift the electrons from atom to atom. Now imagine this happening along the whole conductor, now you have an electron flow. As you can imagine, they only move when you move the magnet. that is why you need a changing magnetic field to create a 'flow' of electrons, otherwise they are still (staying in their atom) and there is no current.
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where does the e- come in?
