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Is demagnetizable magnet is remagnetizable?
Yes, a demagnetizable magnet can be remagnetized. This is done by subjecting the magnet to a strong enough magnetic field in the opposite direction to re-align its magnetic domains and restore its magnetism.
Can a magnet attract to a demagnetized iron rod?
Yes. In this case, the magnet will induce magnetism in the iron, which is originally unmagnetized. Once the magnet is removed, the iron may return to an unmagnetized state; unless the magnetic field near the piece of iron is very strong.
Is a bar magnet a permanent magnet?
A permanent magnet is a magnet which will keep its magnetism for a very long time and is difficult to change. No, As I think a permanent magnet means they have abilities to hold the magnetism when they are magnetized. Such as Alnico permanent magnets, but in fact, they can be demagnetized,such as high temperature, hit each other,pulse waves, out magnetic field influence...What's more, different permanent magnetic material, have different abilities on holding magnetism,they can be used in different environments. you can find some details from some manufacturers website, to learn some knowledges.
Which has more magnetism north or south?
As far as I know, the north and south poles of a magnet are equal in strength, because the net magnetic charge of a magnet must be zero (unless monopoles exist).
What happened to the iron filings magnetism after several shakes?
After several shakes, the iron filings lose their organized alignment with the magnetic field of the magnet. Initially, they align along the magnetic lines of force, demonstrating their magnetism. However, the shaking disrupts this order, causing the filings to scatter and lose their magnetic orientation. As a result, they may no longer visibly demonstrate magnetism unless re-aligned by the magnetic field.
Will exposing a magnet to a DC magnetic field demagnetize it?
Exposing a magnet to a DC magnetic field typically won't demagnetize it unless the field is very strong and exceeds the coercivity of the magnet. In most cases, a DC magnetic field won't affect the magnet's strength but can alter its orientation or alignment.
How can a compass be used to check the strength of an electromagnet?
see if a magnet will stick to it someone who knows stuff about magnets please improve this answer. I myself do not know because a magnet will not stick to a very weak magnet but it is still magnetic. EDIT why would you answer if you don't know the answer? You stroke a bar magnet on the material and after a while it either becomes magnetic or not. unless its already magnetic which you would know straight away because it would stick to the bar magnet. sorry if any of my answer doesnt make much sense ... hope i helped someone
Can a magnet pick up a paper clip in water?
Certainly, as long as the paper clips are made of iron or steel. Most paper clips are made of polished or zinc-plated steel. Magnetism is a field that is not affected by water or any intervening matter unless that matter is also magnetic, or ferromagnetic.
How do you identify magnet made of copper?
you cannot make a magnet out of copppe unless you run a current through it
What happens when you put a magnet in a fire?
Well, honey, if you put a magnet in a fire, it's gonna lose its magnetic properties. The heat messes with the alignment of the magnetic domains, making it about as useful as a screen door on a submarine. So, unless you're aiming to create a very expensive paperweight, I'd suggest keeping that magnet far away from the flames.
How can dropping a magnet destroy its magnetism?
There are molecules in a magnet that allow it to stick to other things. It has something to do with positive and negative charges or atoms in an atom cloud, but none of that is important unless you are a scientist. But dropping a magnet could scrape off those important molecules causing it to have less magnetism. It's not that big a difference, but should still be avoided.A.A permanent magnet works because the individual magnetic fields of the molecules in the material are mostly aligned. It is the net effect of this magnetic alignment that we experience. Dropping a permanent magnet onto a hard surface sends vibrations rippling through the material, thus causing some of the molecules to change position and out of magnetic alignment. A magnet may have to be dropped or hit repeatedly to become completely demagnetized.
Can a magnet affect an airplane?
Not unless you are up in the cockpit of the plane. A heavy duty magnet could cause gauges to read incorrectly.
