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How do you magnetize and demagnetize a magnet?
By placing Iron in a strong magnetic field, the field will turn the iron into a magnet. If you melt the iron and then allow it to resolidify, it will drop the magnetic charge (and you can charge it again if you wish).
What is a force that wraps around a magnet?
magnetic pull
What kind of field is around a magnet?
the magnetic field
How can you see the invisible magnetic field?
You can make magnetic field lines with a magnet. You an use a permanent magnet, or an electromagnet.
What must a magnet always have?
A magnetic field.
How do you magnetize and demagnetize a magnet?
By placing Iron in a strong magnetic field, the field will turn the iron into a magnet. If you melt the iron and then allow it to resolidify, it will drop the magnetic charge (and you can charge it again if you wish).
How can magnet be made weaker or be de-magnetised?
the strength of a magnet depends on the number of magnetic dipoles pointing in a preferred direction. To reduce the magnetic strength or to demagnetize a magnet will involve randomizing all the dipoles so that they have no preference in which orientation they are pointing. One way to do it is to heat the magnet to below its melting point. Another way is to apply alternating magnetic field to the magnet for a period of time. A rapidly changing magnetic field is usually generated by an electromagnetic energized by an alternating current.
How you can demagnetize materials?
A magnet has magnetic properties because the dipoles of the atoms are lined up in a single direction. To demagnetize it, you must scramble the dipoles out of alignment. First, heat the magnet past the Curie point (the temperature at which it loses its magnetic properties until cooled). Strike it on the ends of the magnet with a hammer. When cooled, it will no longer be magnetized.
The area around an object that is affected by the magnetism of that object is the?
A Magnetic Force
Where is the field around a magnet strongest?
Where is the magnetic field around a magnet strongest? Answer: A magnetic field is strongest around the poles. Your welcome! :)
Where is the magnetic force the greatest on a magnet?
The magnetic force of a magnet is strongest at its poles. This is because the field lines of the magnetic field are most concentrated at the poles where they enter and leave the magnet. At the poles the magnetic field is strongest and the force is the greatest. The north pole is where the magnetic field lines enter the magnet. The south pole is where the magnetic field lines leave the magnet. The magnetic field lines are most concentrated at the poles. The magnetic force is greatest at the poles.
How can a non magnetic nail be magnetised?
Typically you can magnetize iron or steel by exposing it to a strong magnetic field. Common "ceramic" magnets may not be strong enough, but you may need a strong rare earth magnet or a strong electro magnet.
What do you call the force around a magnet?
the area of magnetic force around a magnet is called the magnetic field
How can a magnet break?
Heating the magnet to very high temperatures, hitting it very hard e.g. with a hammer, and exposing it to a strong, random magnetic field would work. Do not try these at home!! Magnets contain aligned, spinning molecules to create a strong magnetic field. The above methods break the alignment of the molecules, destroying the magnet.
How can you break a magnet?
Heating the magnet to very high temperatures, hitting it very hard e.g. with a hammer, and exposing it to a strong, random magnetic field would work. Do not try these at home!! Magnets contain aligned, spinning molecules to create a strong magnetic field. The above methods break the alignment of the molecules, destroying the magnet.
How are magnets destroyed?
Ferromagnetism can be impaired by creating an opposing magnetic field. A wire coil placed around a magnet creates an electromagnetic field. If this is aligned in the opposite direction, it could eventually remove the intrinisic field of the permanent magnet.In many cases, simply heating a magnet would likewise remove the magnetic field.Use a degaussing coil (driven by AC, not DC). Gradually reduce the field strength either by reducing the AC current or slowly separating the coil and the object.
How can you make a magnet lose it magnetic power?
Methods to demagnetize a magnetThere are several ways to demagnetize a magnet: high temperature, AC magnetic fields, mechanical shocks, and physical distortion. If we heat a magnetic material above its "Curie Temperature," its magnetism vanishes entirely. When the magnet cools down again, all the microscopic magnetic domains will point in circles, so the magnet will have zero overall field. Neodymium magnets have a low Curie Temp., so they are more sensitive to overheating than other types of magnet.If we expose a magnet to the field from a strong electromagnet, the electromagnet will magnetize the magnet perhaps in a different polarity. But if we instead use an AC electromagnet, then move it away from the magnet, the magnet's polarity will flip back and forth, becoming weaker and weaker. The magnet will end up demagnetized. This is called "Degaussing."Steel magnets are sensitive to mechanical shocks, and you can weaken a steel magnet by striking it with a hammer. Other magnetic materials are far less sensitive to hammering.We can also demagnetize a magnet by forcing its poles together. For example, if we bend a horseshoe magnet so it forms a complete circle, its field will become a circle entirely inside the magnet, and it will have no poles or attraction. Or, if we grind a magnet up into small pieces, the pieces will align so the north pole of one fragment will be against the south pole of another, and the outside field will be small or zero.
