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Inertia. A system will not change it's properties until an external force is applied. Permanent magnets DO decrease in strength by being used as they are subjected to external magnetic fields that oppose them. How much a permanent magnet will be affected by the external field depends on it's Hysteresis loop characteristics.
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For a permanent magnet where is the energy associated to the magnetic field of the magnet stored?
The energy associated with the magnetic field of a permanent magnet is stored in the magnetic dipoles of the material making up the magnet. When the magnet is magnetized, these dipoles align in a way that stores energy within the material. This stored energy can be released when the magnet interacts with other magnetic materials or experiences mechanical forces.
How is a permanet magnet destroyed?
Physical damage, exposure to extreme heat, or exposure to strong magnetic fields can cause a permanent magnet to lose its magnetism. Once a permanent magnet is demagnetized, it is very difficult to restore its original magnetic properties.
When a piece of iron behaves like a magnet when it is touching a permanent magnet that is called?
The process by which a iron piece touching a permanent magnet behaves as a magnet as long as it maintains contact is called magnetic induction. not only does this work when the iron is physically touching the magnet but it works as long as the piece of iron remains under the influence of the magnet. A iron piece attracted to a magnet through a paper with out any physical contact will also behave as a magnet.
A piece of magnetic material that retains its magnetic properties after it is removed from a magnetic field?
A material that retains its magnetic properties after being removed from a magnetic field is called a permanent magnet. These materials are able to maintain their magnetization due to their atomic or molecular structure that allows them to have a permanent magnetic field. Common examples include materials like iron, cobalt, and nickel.
Why is the magnetic field produced by a cylindrical solenoid is similar to a cylindrical permanent magnet?
Simple Answer:The shape of the magnetic field of a uniformly wound solenoid is very nearly identical to the field produced by a uniformly magnetized permanent magnet with the same physical shape as the solenoid.For the Experts:This is a consequence of the mathematical equivalence of the source of the magnetic field as created by a current and the source of a magnetic field as created by the curl of the magnetization density of permanent magnet.
How can a magnet be temporarily magnetized when attached to a permanent magnet?
When a magnet is attached to a permanent magnet, it can become temporarily magnetized by aligning its magnetic domains with the strong magnetic field of the permanent magnet. This alignment causes the magnet to exhibit magnetic properties for a short period of time.
Is the magnet in a compass a permanent magnetic or an electromagnet?
PermanentThere is no source of current in a compass, therefore the magnet is a permanent magnet.
Is magnetite a magnet?
No, it's a permanent magnet. It consists of an iron oxide, and iron is a permanent magnet.
Is electromagnet a permanent magnet?
No, an electromagnet is not a permanent magnet. It is a magnet that produces a magnetic field when an electric current is passed through it, and the magnetic field disappears when the current is turned off.
Can a permanent magnet and a temporary magnet be made from the same magnetic material?
no they can not.
What distinguishes a permanent magnet from a temporary magnet?
Permanent magnets do not lose their magnetic ability. Temporary magnets, however, gain magnetic properties when they are touched or moved by a permanent magnet. The properties of a temporary magnet dissipates over time after the permanent magnet is removed.
Which of the following is an example of an permanent magnet?
A refrigerator magnet is an example of a permanent magnet. These magnets retain their magnetic properties without the need for an external magnetic field.
Where there is magnitude of the magnetic field around a permanent magnet greatest?
The magnitude of the magnetic field around a permanent magnet is greatest at the poles of the magnet. This is where the magnetic field lines are most concentrated and where the magnetic force is strongest.
Is the magnet in a compass a permanent magnet or a electromagnet?
It is a permanent magnet. Electromagnets(as the name suggests) requires an electric source to become a magnet, when the power source is turned off it will not function as a magnet.
How are magnet made?
Magnets are made by lodestone. If the magnetic qualities of lodestone are passed in a magnetic substance, then it will be a permanent magnet.
How do you know that there is not a huge permanent magnet at the earths core?
For one, the magnetic field changes continuously; this is not consistent with a permanent magnet.
Can the earth be a permanent magnet?
No, the Earth is not a permanent magnet. Earth's magnetic field is generated by the movement of molten iron and nickel in its outer core, creating a magnetic field that fluctuates in both strength and direction over time. It is not a fixed or permanent magnet like a bar magnet.
