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Magnetic materials concentrate magnetic field lines inside themselves, so if you have something you don't want exposed to a magnetic field, you could put it inside a soft iron box and the magnetic field inside the box will be less than it would be if the box wasn't there.
But no, there's nothing that absolutely stops a magnetic field.
What else can I help you with?
What is meant by core saturation?
Core saturation refers to a point in which the magnetic core material of an inductor or transformer becomes fully magnetized to its maximum flux density, limiting any further increase in magnetic flux. When a core is saturated, it can lead to distortion of the waveform, loss of efficiency, and overheating of the component.
Can there be any magnetic flux through closed surface?
No, according to Gauss's law for magnetism, the total magnetic flux through a closed surface is zero. This is because magnetic monopoles do not exist, so the magnetic field lines always form closed loops.
How does saturation affect the magnetic circuit?
Saturation in a magnetic circuit refers to the point at which the magnetic material can no longer be magnetized fully. Once saturation occurs, any further increase in magnetic field strength will not result in a significant increase in magnetization. This can limit the amount of magnetic flux flowing through the circuit and reduce the overall efficiency.
Why does magnetic flux not pass through the hole in the washer?
This question refers to the phenomena of making a washer rise when it is in a superconducting state. This is a popular science demonstration experiment. Normal superconductors will not allow the penetration of a magnetic field into its interior. This is accomplished by creating a current distribution on the surface that is arranged to exactly cancel the externally created field in the interior of the superconductor. The induced current is an electromagnet and has an external magnetic field. As with any magnet, there is a force then between the electromagnet and the external magnetic field source. They repel and the washer moves.
How does distance affect magnetism?
Magnetic field strength (H) is defined as the magnetomotive force per unit length, and is expressed in amperes per metre (often spoken as 'ampere turns per metre') in SI. An older, and far more descriptive term, is 'magnetomotive force gradient'.The 'closeness' or intensity of a magnetic field's flux lines, on the other hand is termed magnetic flux density(B), expressed in teslas in SI.There is a complex relationship between magnetic field strength and flux density, because of a property exhibited by ferromagnetic materials, called 'hysteresis'. In general, as the magnetic field strength applied to a sample of unmagnetised ferromagnetic material increases, the resulting flux density also increases (but not linearly) until saturation is reached, at which point any further increase in magnetic field strength will have no effect whatsoever on the flux density. If the magnetic field strength is then reduced, the flux density will also reduce (again, not linearly), but when the magnetic field strength reaches zero amperes, a certain amount of flux density remains.So to answer your question, you really need to study what's known as the B-H or magnetising curve for a sample of ferromagnetic material -this will show you exactly what the relationship between magnetic field strength and flux density for any give ferromagnetic material.
Is any material restrict to pass magnetic flux?
Look up the term PERMEABILITY and I'm sure you can find charts for various materials listing this measured characteristic.
Is there any device which can convert constant magnetic flux into variable flux?
A generator, in general.
What is meant by core saturation?
Core saturation refers to a point in which the magnetic core material of an inductor or transformer becomes fully magnetized to its maximum flux density, limiting any further increase in magnetic flux. When a core is saturated, it can lead to distortion of the waveform, loss of efficiency, and overheating of the component.
What is 'flux vortex'?
This is both pop science and real science. A "flux" vortex is a magnetic flux in rotation. A "magnetic flux," scientifically, is the product of interaction that occurs when any magnetic field connects with any surface which itself has electromagnetic properties (as all material objects and energies do). Since a vortex is a rotating zone of matter or energy (whether water, air, light, or just force), it also has a surface, whether virtual or real, which projects magnetic fluctuations in the space around the vortex. The "flux vortex" was a concept popularized in the film Avatar -- there it referred to a phenomenon of unpredictable changes in magnetic force around certain objects; the fluctuations (hence "flux") would cause instrument failure or misreadings, loss of radio or communications contact and other dangerous consequences.
Can any material insulate a magnetic field?
any material can insulate magnetic field
Can there be any magnetic flux through closed surface?
No, according to Gauss's law for magnetism, the total magnetic flux through a closed surface is zero. This is because magnetic monopoles do not exist, so the magnetic field lines always form closed loops.
What is the limit for magnetic field developed for a DC machine?
The magnetic field used in machines is quantified in terms of its flux density (symbol: B), expressed in teslas. The flux density is established by the magnetic field strength (H), expressed in amperes per metre, set up in the field windings.As the magnetic field strength increases, the flux density increases until it reaches saturation. This is the point when the magnetic domains within the magnetic circuit are all aligned. At this point, any further increase in magnetic field strength will fail to increase the flux density.So saturation of the magnetic circuit limits the flux density of the field.
How does saturation affect the magnetic circuit?
Saturation in a magnetic circuit refers to the point at which the magnetic material can no longer be magnetized fully. Once saturation occurs, any further increase in magnetic field strength will not result in a significant increase in magnetization. This can limit the amount of magnetic flux flowing through the circuit and reduce the overall efficiency.
Why does magnetic flux not pass through the hole in the washer?
This question refers to the phenomena of making a washer rise when it is in a superconducting state. This is a popular science demonstration experiment. Normal superconductors will not allow the penetration of a magnetic field into its interior. This is accomplished by creating a current distribution on the surface that is arranged to exactly cancel the externally created field in the interior of the superconductor. The induced current is an electromagnet and has an external magnetic field. As with any magnet, there is a force then between the electromagnet and the external magnetic field source. They repel and the washer moves.
How does distance affect magnetism?
Magnetic field strength (H) is defined as the magnetomotive force per unit length, and is expressed in amperes per metre (often spoken as 'ampere turns per metre') in SI. An older, and far more descriptive term, is 'magnetomotive force gradient'.The 'closeness' or intensity of a magnetic field's flux lines, on the other hand is termed magnetic flux density(B), expressed in teslas in SI.There is a complex relationship between magnetic field strength and flux density, because of a property exhibited by ferromagnetic materials, called 'hysteresis'. In general, as the magnetic field strength applied to a sample of unmagnetised ferromagnetic material increases, the resulting flux density also increases (but not linearly) until saturation is reached, at which point any further increase in magnetic field strength will have no effect whatsoever on the flux density. If the magnetic field strength is then reduced, the flux density will also reduce (again, not linearly), but when the magnetic field strength reaches zero amperes, a certain amount of flux density remains.So to answer your question, you really need to study what's known as the B-H or magnetising curve for a sample of ferromagnetic material -this will show you exactly what the relationship between magnetic field strength and flux density for any give ferromagnetic material.
Is oil a magnetic material?
No, oil is not a magnetic material. Magnetic materials are those that can be attracted to a magnet, whereas oil is non-magnetic and does not exhibit any magnetic properties.
What are sources of error when obtaining earth magnetic flux density experiment?
Sources of error when obtaining Earth's magnetic flux density in an experiment can include external magnetic interference from nearby sources, imperfect calibration of instruments leading to inaccurate measurements, and variations in the Earth's magnetic field itself over time and location. It is also important to consider any errors introduced during data recording and analysis.
