If a metal bar is to be used to make a permanent magnet, which current should I use, DC or AC? - Quora
Different magnetic freeze casting setups: (a) an axial field formed by... | Download Scientific Diagram
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Magnetism. Magnets ▻ A magnet has polarity - it has a north and a south pole; you cannot isolate the north or the south pole (there is no magnetic monopole) - ppt download
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