MadSci Network: Physics
Query:

Subject: Why does the magnetic field of an electron reverse direction?

Date: Mon Feb 25 17:30:26 2008
Posted by John Butler
Grade level: 10-12 School: 10-12
City: Halifax State/Province: Nova Scotia Country: Canada
Area of science: Physics
ID: 1203985826.Ph
Message:

What? A copper wire moving at right angles through a magnetic field creates a 
net drift of electrons in one direction (one end positive the opposite 
negative). The interaction of the magnetic field of the electron and the 
external magnetic field determines the direction (induced current).I believe I 
have that figured out Question: At the atomic level what is the mechanics 
behind the magnetic field of the electron in one direction moving up through 
the field as opposed to when the electron in the wire is moving down through 
the field. I can vilualize the electron as having a magnetic field which 
interacts with the external magnetic field to cause a net drift in one 
direction for a given direction i.e. up however for the net drift to reverse 
direction then the magnetic field of the electron must reverse. I have 
researched quantum mechanics spin, etc and magnetism, cannot come to any 
conclusion. I could theorize the electron as having magnetic poles (N/S) much 
like earth which causes the electron's magnetic field to switch when the 
copper wire is moving in the opposite direction. I would then need to 
understand the net magnetic field of the atom as well as the magnetic field of 
the electron that causes the reversal of the magnetic field of the electron.


Re: Why does the magnetic field of an electron reverse direction?

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