Is an electromagnet a temporary or a permanent magnet?Electromagnets:A permanent magnet is a magnet that retains its magnetion. A small permanent magnet can be used to hold notes onto the door of a refrigerator. Neodymium magnets are very powerful permenent magnets used in hard drives of computers.Sometimes we do not want a magnet to stay magnetised all the … [Read more...] about Is an electromagnet a temporary or a permanent magnet?