A permanent magnet has a north and south and if you put two norths together or two souths together, they will repel. I have noticed that an electromagnet doesn't seem to care about north and south poles. In other words, it seems that my electromagnet is only one directional. Are electromagnets polarized? Can you make an electromagnet repel a permanent magnet?
2007-02-16 20:51:17 · 2 answers · asked by M 1 in Science & Mathematics ➔ Physics
Electromagnets are definitely polar, but if you feed them alternating current, the polarity reverses at the frequency of the AC, so there is no steady polarity. If you feed the electromagnet direct current, you will have steady polarity.
2007-02-16 20:56:45 · answer #1 · answered by Anonymous · 1⤊ 0⤋
sure they are all magnets are polarized they probably have strange shapes to alter the poles somehow the magnets on mono rails use propulsion and attraction if I'm not mistaken .
and magnetic fields should work the same whether electro or natural .
2007-02-16 20:57:00 · answer #2 · answered by dogpatch USA 7 · 0⤊ 0⤋