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superconductors and internal magnetic field

Posted: Fri Jun 18, 2010 5:46 pm
by r.jenkins
Hi, just want to check this:
When we say that the movement of a magnet onto a superconductor induces currents in the superconductor which create a magnetic field opposing the magnetic field of the magnet, is it correct to say that the induced currents where solely the product of originally moving the magnet onto the superconductor and that they will flow infinitely due to no resistance?

Is there anything else going on here?

Thanks

Re: superconductors and internal magnetic field

Posted: Tue Jun 22, 2010 7:28 am
by joe
Yes, it is a bit more subtle. I've put notes about levitation of a magnet on the High School Physics FAQ at
http://www.phys.unsw.edu.au/~jw/FAQ.html

Joe