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Does a magnet contains a large number of magnetic domains or poles?
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∙ 11y ago
POLES
Wiki User
∙ 11y ago
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How can you show that a given bar is a magnet?
The following two methods are really the same idea:1). Test against a known magnet. Observe whether there is an attraction or repulsion between them.2). Hang the bar by a string from its mid-point. Observe whether it shows a tendency to align itself in a preferred direction.Another method:3). Observe whether the bar picks up paper clips. ---- If you have two bars and are told that one of them is a magnet but the other is not, and you are not allowed to use any other metal, string, etc. to determine which is which, see which one is attracted to the middle of the other bar. That one's the magnet.
Is steel magnet?
Generally speaking, yes, steel is magnetic. But it should be noted that there are a number of steels that are notmagnetic. It is necessary to identify a type of steel before inquiring about its magnetic characteristics.
How many atoms are in a magnet?
Even a single atom (if it is the right kind of atom) can generate a magnetic field, so there can be any number of atoms in a magnet, from one onwards to very large numbers, such as 1025.
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 difference between orbital quantum number and Magnetic quantum number?
OQ# has to do with angular momentum. MQ# has to do with the particle behaving like a little bar magnet, (really just a moving charge -> creating a magnetic field).
How can you show that a given bar is a magnet?
The following two methods are really the same idea:1). Test against a known magnet. Observe whether there is an attraction or repulsion between them.2). Hang the bar by a string from its mid-point. Observe whether it shows a tendency to align itself in a preferred direction.Another method:3). Observe whether the bar picks up paper clips. ---- If you have two bars and are told that one of them is a magnet but the other is not, and you are not allowed to use any other metal, string, etc. to determine which is which, see which one is attracted to the middle of the other bar. That one's the magnet.
Why does moving the magnetic field past the wire induce a voltage?
A good question. When an electron is moved, it will generate a magnetic force. In a permanent magnet, there are a 'magnetic domains' in which a number of electrons have similar spin direction. In an electromagnet, there are, by definition, a number of electrons moving in the same direction. If you do not have a moving electron, you do not have a magnetic field! From this statement, you may deduce that the amazing magnetic loops on the Sun, are generated by currents flowing inside the Sun.
Which magnet is the strongest?
The strongest magnet contains neodymium a rare earth metal with atomic number of 60.
The number of lines of force in a magnetic field depends on the what of the magnet?
It depends on the strength of the magnet.
What is a magnet and how does it work?
At the most fundamental level, all magnets are caused by moving electrons.In an electromagnet, there is an electric current flowing through a wire coil.In permanent magnets, a number of magnetic domains form, in which some adjacent atoms have their electrons spinning in synchrony.This is not common, but occurs in some materials due to the geometry of the crystal structure.The magnetic field of a magnet diminishes in strength the further away it becomes.
The number of lines of force in a magnetic field depends on the blank of the magnet?
strength, the number of lines represents how strong the magnet is, this is also sometimes shown by the thickness of the lines.
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.
Is steel magnet?
Generally speaking, yes, steel is magnetic. But it should be noted that there are a number of steels that are notmagnetic. It is necessary to identify a type of steel before inquiring about its magnetic characteristics.
Does the strip of tape found at the back of a credit card or bank card contains magnetic strip codes?
The magnetic strip contains data relating to the Account number, Branch number & Sort code of the bank where the account is held.
Does moving electricity cause a magnetic field?
Magnetic fields are only caused by moving electrons. In the case of a current flow, this is the common experience.For a permanent magnet, this effect is caused by the alignment of a number of spinning electrons into a magnetic domain. All their spins pointing the one direction.The magnetic fields and loops on the Sun are caused by currents flowing in the Sun's body. At many thousands of degrees, it is impossible for a magnetic material to exist. This is known as the Curie Temperature - another discovery by Marie Curie - and is the temperature above which a magnetic may be maintained in a material. In essence, the thermal motions of the molecules are too vigorous to permit the creation of aligned magnetic domains.
What are the factors that determine the size and direction of the emf generated by the permanent magnet generator.?
number of conductors speed magnitude of the magnetic flux
How many atoms are in a magnet?
Even a single atom (if it is the right kind of atom) can generate a magnetic field, so there can be any number of atoms in a magnet, from one onwards to very large numbers, such as 1025.
