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Three uses of a permanent magnet are:
1. In the needles of compasses which are used to navigate airplanes and ships;
2. In fridge door seals, to hold the doors closed;
3. In loudspeakers and microphones, which need to have permanent magnets as well as electromagnets to work.
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∙ 12y ago
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Is a needle in a compass a permanent magnet?
Yes, it is a permanent magnet.
Objects that keep their magnetic properties for a long time?
A permanent magnet (in contrast to an electromagnet).
What might happen if you drop a permanent magnet or strike it hard?
A permanent magnet may become unmagnetized because a shock it will have.
What is a lifting magnet?
A lifting magnet is an electromagnet that is meant to hold or move material that comes in contact with the magnet. This is the opposite of a traction magnet.
What is a non permanent magnet?
An electromagnet (a coil around a soft iron core) will only be magnetic when current changes in the coil and so is not permanent.
What uses are there for a permanent magnet?
The permanent magnet always retains its magnetism so even the smallest temporary magnets will stick to it. its uses will include keeping the refrigerator door sealed nice and tight as well as the actual door being a permanent magnet so pictures and notes to the kids can be hung on it.
Is the magnet in a compass a permanent magnet or electronic?
A. Compasses typically use a permanent magnet.
Is magnetite a magnet?
No, it's a permanent magnet. It consists of an iron oxide, and iron is a permanent magnet.
Does a VCR have a magnet?
A VCR (Video Cassette Recorder) uses electromagnets in the record, playback, and erase heads. An erase head can also have a permanent magnet in it.
Is a needle in a compass a permanent magnet?
Yes, it is a permanent magnet.
What are three types of metal that can be turned into a permanent magnet?
There are two main/most common, types of magnet. One is permanent and the other is temporary. There could be more detailed classifications, but I do not know them ;)
Is magnetite a temporary magnet?
No, it's a permanent magnet. It consists of an iron oxide, and iron is a permanent magnet.
How are the uses of an electromagnet different from those of a permanent bar magnet?
A bar magnet is made from magnet materials and has a magnetic field at all times. An electromagnetic is not naturally magnet and only has a magnetic field when electricity is passed through it.
What distinguishes a permanent magnet from a temporary magnet?
Permanent magnets do not lose their magnetic ability. Temporary magnets, however, gain magnetic properties when they are touched or moved by a permanent magnet. The properties of a temporary magnet dissipates over time after the permanent magnet is removed.
Is the magnet in a compass a permanent magnetic or an electromagnet?
PermanentThere is no source of current in a compass, therefore the magnet is a permanent magnet.
Is a Refrigerator magnet a Permanent magnet?
yes
An example of a permanent magnet?
An example of a permanent magnet would be the Earth. The Earth is one giant magnet with opposite poles.
