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Cooling a magnet would cause the magnets atoms to work slower. THIS would cause the magnetic force to work faster, increasing its strengh.
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∙ 11y ago
Cooling a magnet can actually increase its magnetic properties. At low temperatures, the thermal energy of the material decreases, causing the magnetic domains to align more easily and enhancing the magnetization. This phenomenon is known as magnetic cooling. However, if the magnet is cooled to extremely low temperatures, such as near absolute zero, it can lose its magnetic properties altogether due to a phenomenon called the Curie temperature.
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How can the magnetism of a permanent magnet be weakened or removed?
Put it in a coil which has an alternating current in it. The AC current produces a magnetic field in the coil which alternates with the changing voltage. This changes the magnetism of the permanent magnet. Gradually reduce the current in the coil and the permanent magnet will end up unmagnetised.
Does foam affect the strength of a magnet?
Magnetism is the number of magnetic moments per unit of volume, so it is the volume of the magnet that determines magnetism. If an object has great weight and volume, the magnetism will be stronger. If an object has a great weight but lesser volume, the magnetism will be weaker.?æ
What is the current ring theory of magnetism?
Some people believe magnetic ions have healing properties. The theory is that the body absorbs positive or negative ions to reduce pain, swelling and increase immunity.
Does a magnet always have 2 poles?
All permanent magnets have two poles.A permanent magnet may have a complicated geometry, but even then the magnetic poles always reduce to the category of north pole or south pole.We say that magnetic field lines start at a north pole and end at a south pole. (In reality, the lines go through the magnet and connect inside so there really is never an end to a magnetic field line.)Electromagnets do not have a pole in the same sense as a permanent magnet, so there is no place on an electromagnet for a field line to start or stop. That is fine, of course, since it is really having field line starting or stopping which is not allowed by the laws of physics.The fundamental laws of magnetism do not permit the possibility of a single pole on a magnet or atom or particle of any sort. Such a thing has a name. It is called a magnetic monopole. There have been extensive searchers for such an entity, but none have been found. We do not have a guarantee that none exist however. Of course, if one were found it would require that we alter the equations that now constitute the basic laws of electromagnetic theory.yes
Why is glass not magnetic?
The reason i have this question is because when i put a glass ashtray in front my TV without a using it at all. There is an area of the TV screen that has a tint variation only were tha ashtray is sitting. I am wondering if it can hold remnance of a magnetic field because a recently used the ashtray to hold a rare earth magnet for an expeirament and recently have noticed this anomaly. Because i've had the understanding that glass has no magnetic properties.
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.
Why does dropping a magnet reduce its stregnth?
the magnetic domains have become un-alligned. meaning instead of being parallel, they are shifted and are not straight OR The magnetic domains are disturbed
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.
What is the function of fore and aft magnet in a magnetic compass?
The fore and Aft magnets reduce the effect of the ships steel on the compass, so you get a more accurate bearing.
How can the magnetism of a permanent magnet be weakened or removed?
Put it in a coil which has an alternating current in it. The AC current produces a magnetic field in the coil which alternates with the changing voltage. This changes the magnetism of the permanent magnet. Gradually reduce the current in the coil and the permanent magnet will end up unmagnetised.
Does foam affect the strength of a magnet?
Magnetism is the number of magnetic moments per unit of volume, so it is the volume of the magnet that determines magnetism. If an object has great weight and volume, the magnetism will be stronger. If an object has a great weight but lesser volume, the magnetism will be weaker.?æ
How would reduce the reverse polarity in magnetization of permanent magnet?
Degauss it and remagnetize it in a field. Best when heated over the magnets Currie point. Cooling it down in a field the reverse of what you started with.
What are shading bands and why are they provided in energy meters?
shading bands are used to increase the magnetic field in shunt magnet in single phase energy meter. They also used for reduce the friction error.
How are magnet's used?
High speed rail systems use MAGnetic LEVitation to reduce friction on the track(s). Hence the term MAGLEV.
What is a British 1 Penny coin made from and is it magnetic?
No British coin is magnetic. Coins made from steel can be attracted to a magnet. From 1968 to 2011, the British 10 Pence coin was made from a copper-nickel alloy and therefore have no magnetic properties, copper and nickel both being non-ferrous metals. From late 2011, the British 10 Pence coin is made from nickel plated steel which has some magnetic properties similar to the 1 Penny and 2 Pence coins issued from 1992. The move towards coins made from steel is an effort by many countries to reduce the cost of manufacturing coins. Also, the coins are much more durable, even if the plating is not, and may extend the life expectancy of coins well beyond 50 years.
How do you make a permanent magnet lose its magnetism?
Heat allows the atoms in a magnet to become less organized, causing the individual magnetic fields of the atoms to cancel each other out, dissipating the effect.An electromagnet is simply a wire coil energized by an electric current, which aligns its atoms (polarize them) as electrons flow through it, creating a temporary magnetic field.AnswerThe most effective way of demagnetising a magnet is to insert it into a coil, pass an a.c. current through the coil and gradually reduce that current to zero.
What is the current ring theory of magnetism?
Some people believe magnetic ions have healing properties. The theory is that the body absorbs positive or negative ions to reduce pain, swelling and increase immunity.
