MadSci Network: Engineering

Subject: spinning a copper ring quite different to current in ring

Date: Tue Jun 27 10:51:06 2006
Posted by david
Grade level: teacher/prof School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Engineering
ID: 1151430666.Eg

WE charge a horizontal flat ring of copper wire, center O, with excess 
When we rotate the ring about vertical axis thru O and BECAUSE it has 
resistance SOME of the electrons collide with the lattice. 
In contradistinction to this, if we send a current thru the wire the electrons 
diffusing past a fixed point are 1.6 10^18 per amp

How does the B field of the moving charged ring compare to that of the 
stationary-with-current ring
B1=B2 times what function of resistance?

Re: spinning a copper ring quite different to current in ring

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