2006-09-29 14:58:26 · 4 answers · asked by panther 1 in Science & Mathematics ➔ Physics
The superconductor acts as a perfect diamagnet. An externally applied magnetic field will induce an eddy current that cancels it out. This is also called the Meissner effect and is the reason a magnet can be levitated above a superconductor.
2006-09-29 15:24:09 · answer #1 · answered by SkyWayGuy 3 · 0⤊ 0⤋
A magnetic field is a result of moving electric charge (current)
They are two sides of the same coin.
A superconductor is conducting something, since there is no resistance. So current is still bouncing around inside the SC, like a bell continuing to ring without diminishing. Hence a magnetic field is produced.
2006-09-29 22:09:07 · answer #2 · answered by Holden 5 · 0⤊ 0⤋
There's some weird crap going on in a superconductor. By definition, it superconducts...meaning the resistance is essentially zero. This happens only at extremely low temps...near absolute zero. When this temperature level is reached, the molecules of the crystal structure of the conductor kinda stop oscillating. This lessens the bending tendancy of the magnetic filed. The field is still there, but it's starting to straighten out. If you were to zoom out far enough, you would see the same familiar field pattern, but in the scale of the lab or experiment, the field lines approach parallel.
2006-09-29 22:07:38 · answer #3 · answered by Professor 3 · 0⤊ 0⤋
um...thats an odd question...
magnetic field exists in regular wires also...using the right hand rule u can figure out which direction the field is going with respect to the current....a super conductor is just a VERY low resistant wire so it also has a magnetic field surrounding it once a current passes through
2006-09-29 22:01:16 · answer #4 · answered by Mr.Moo 4 · 1⤊ 0⤋