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A region in a ferromagnetic material has a large number of atoms which aligh magnetic fields is called?
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A wave that consists of changing electric and magnetic fields is called?
Magnetic field
Why does the soft iron core increases the strength of magnetic field?
Iron core (usually soft iron core) is a highly ferromagnetic material. Ferromagnetic materials allows (and attracts) the magnetic field lines to pass through it. When such a material is used in the electromagnet, the magnetic field lines passing through it increases, thereby, the strength of the electromagnet increases. So my friend, I hope you are satisfied with the answer.
Does a superconductor expel a magnetic field?
As a superconducting material transitions into its superconducting state, it ejects internal magnetic fields. In that light, yes, a superconductor could be said to expel a magnetic field according to what is called the Meissner effect. A link can be found below.
A grouping of atoms that have their magnetic fields aligned is called?
A Magnetic Domain is a cluster of billions of atoms that have magnetic fields lines up the same way.
How do paired electrons affect the magnetic properties of a material?
Because of a property called spin, electrons act like tiny magnets. Most of the time paired electrons contain opposite spins, meaning the material has a weak magnetic field. The more paired electrons a material has, the weaker the magnetic field in the material. Unpaired electrons attract and repel other material. This determines which materials unpaired electrons match up with and attract to form a magnetic domain.
What is a science experiment that demonstrates that magnetic fields cannot be blocked?
Magnetic fields can be blocked. Magnetic fields cannot penetrate a superconductor, and regions can be shielded from magnetic fields using ferromagnetic materials.
Why transformer core is of magnetic not of wooden?
The transformer core is ferromagnetic in order to focus and concentrate the magnetic fields generated in the windings. This improves coupling and increases inductance.
Is there an antimagnetic material that is thin and block or diverted it all magnetic flux fields?
Yes, a grain-oriented form of iron called mu-metal is used as a screen of magnetic fields for such things as CRT's. This material has a high magnetic permeability, called mu (the Greek letter) in the trade, hence mu-metal. Effectively it 'short circuits' a magnetic field. A double screened cage called a Faraday Cage does the same function for electromagnetic fields.
What is maganese?
Manganese can be ferromagnetic after a special treatment. Otherwise it is non reactive to magnetic fields in all four of its allotropic forms.
What causes an electromagnet to cause motion?
A magnet, permanent or electro-, will induce an opposite magnetic field in a ferromagnetic material. These two fields will attract, and if either of the members is free to move it will do so. Hans Oersted, a Dane, in 1820 noticed that an electrical current caused a nearby magnetic needle to move.
Differentiative between diamagnetic paramagnetic and ferromagnetic?
Diamagnetic metals have a very weak and negative susceptibility to magnetic fields. Diamagnetic materials are slightly repelled by a magnetic field and the material does not retain the magnetic properties when the external field is removed. Diamagnetic materials are solids with all paired electron resulting in no permanent net magnetic moment per atom. Diamagnetic properties arise from the realignment of the electron orbits under the influence of an external magnetic field. Most elements in the periodic table, including copper, silver, and gold, are diamagnetic. Paramagnetic metals have a small and positive susceptibility to magnetic fields. These materials are slightly attracted by a magnetic field and the material does not retain the magnetic properties when the external field is removed. Paramagnetic properties are due to the presence of some unpaired electrons, and from the realignment of the electron orbits caused by the external magnetic field. Paramagnetic materials include magnesium, molybdenum, lithium, and tantalum. Ferromagnetic materials have a large and positive susceptibility to an external magnetic field. They exhibit a strong attraction to magnetic fields and are able to retain their magnetic properties after the external field has been removed. Ferromagnetic materials have some unpaired electrons so their atoms have a net magnetic moment. They get their strong magnetic properties due to the presence of magnetic domains. In these domains, large numbers of atom's moments (1012 to 1015) are aligned parallel so that the magnetic force within the domain is strong. When a ferromagnetic material is in the unmagnitized state, the domains are nearly randomly organized and the net magnetic field for the part as a whole is zero. When a magnetizing force is applied, the domains become aligned to produce a strong magnetic field within the part. Iron, nickel, and cobalt are examples of ferromagnetic materials. Components with these materials are commonly inspected using the magnetic particle method.
What are two effects of earths magnetic fields?
Earth's magnetic field can make magnets out of ferromagnetic material and it affects the movements of electrically charged particles in space.
What happens to the electrons in materials that are turned into magnets?
When a magnet becomes demagnetized whats really happening is the arrangement of the domains is getting out of particular arrangement. When electrons are randomly arranged they cancel each others field and overall effect is zero. When a stronger magnetic field is applied to the object, its magnetic effect can be restored.
Why does a magnet attract a plastic car?
Either there is some ferromagnetic material in it, or given a large enough magnetic field, some plastics are paramagnetic, and are weakly attracted to magnetic fields. If this is something you have observed, however, it's probably due to some metal in the car, as the magnets required to observe paramagnetism are truly huge.
Electromagnets are created using what?
An electric current flowing in a wire creates a magnetic field around the wire. To concentrate the magnetic field of a wire, in an electromagnet the wire is wound into a coil, with many turns of wire lying side by side. The magnetic field of all the turns of wire passes through the center of the coil, creating a strong magnetic field there. A coil forming the shape of a straight tube (a helix) is called a solenoid; a solenoid that is bent into a donut shape so that the ends meet is called a toroid. Much stronger magnetic fields can be produced if a "core" of ferromagnetic material, such as soft iron, is placed inside the coil. The ferromagnetic core magnifies the magnetic field to thousands of times the strength of the field of the coil alone. This is called a iron-core electromagnet.
Can granite pick up paper clips?
Nope. Granite is largely Calcium Carbonate (Ca2CO3). Calcium carbonate is not ferromagnetic and does not produce nor interact with magnetic fields.
What are metals that are attracted to magnets or made into magnets called?
Unpaired electons (which is to say, electrons not paired with another electron of opposite spin).
