0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Does any material restrict magnetic flux?
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 is the experiments and shop test for Identifying Ferrous and nonferrous Metals and alloys?
Get a magnet, Magnets stick to ferrous metals, and do not stick to non-ferrous metals. Metals containing iron are ferrous (iron's chemical symbol: Fe). You use iron filings to see the lines of magnetic flux. Pure iron is as ferrous as you can get! Pure copper, on the other hand, is non-ferrous AND non-magnetic.
How do you calculate the magnetic field strength in an injector cyclotron?
- Magnetic field strength is the intensity of a magnetic field at a given location. Historically, a distinction is made between magnetic field strength H, measured in ampere/meter, and magnetic flux density B, measured in tesla. Magnetic field strength is defined as the mechanical force (newton) on a wire of unit length (m) with unit electric current(A). The unit of the magnetic field, therefore, is newton/ (ampere x meter), which is called tesla. The magnetic field may be visualized by magnetic field lines. The field strength then corresponds to the density of the field lines. The total number of magnetic field lines penetrating an area is called magnetic flux. The unit of the magnetic flux is tesla x m2 = weber. The older units for the magnetic flux, maxwell = 10-8 weber, and for the magnetic flux density, gauss = maxwell / cm2 = 10-4 tesla, are not to be used any more. Magnetic flux density diminishes with increasing distance from a straight current-carrying wire or a straight line connecting a pair of magnetic poles around which the magnetic field is stable. At a given location in the vicinity of a current-carrying wire, the magnetic flux density is directly proportional to the current in amperes. If a ferromagnetic object such as a piece of iron is brought into a magnetic field, the "magnetic force" exerted on that object is directly proportional to the gradient of the magnetic field strength where the object is located. ------------------------------------------------------------------- B=μH Magnetic field in Solenoid B=μnI where n is turns/m So H=nI --------------------------------------------
Iron filings scattered around a magnet will be most strongly drawn toward the?
Magnetic lines of force.
Which types of iron are not magnetic?
All iron is magnetic.
What makes a material diamagnetic?
All materials naturally repel magnetic lines of flux but some materials, like iron, are attracted to magnetic flux because they have unpaired electrons that are attracted to the lines of flux.
How can magnets be made by hammering in the earth's magnetic field?
It will happen in any magnetic field if the iron rod is aligned with the external flux lines and you hammer in the direction of the flux lines, and you have LOTS of patience as you may need to hammer a hundred or more times to get a "strong" magnetization. What happens (if you want to know) is the hammering joggles the magnetic domains from their previous random orientations and they gradually settle into orientations more closely aligned with the external flux lines. The same thing will happen but more effectively if the iron rod is heated to its curie point temperature and then cooled while aligned with the external flux lines. The heat allows all the magnetic domains to realign.
Why is a soft iron core used in a relay coil?
because it can magnetize and demagnetize easily
Is flux visible to human naked eye or not?
Magnetic flux by itself is not visible to the human eye, but they can be seen with a flat, non-magnetic, thin surface. A magnet and some Iron filings. Simply place the magnet under the flat surface (such as a thin sheet of wood) and hold it there. then place the Iron filings above the flat surface and move the magnet a little. you should see the magnetic lines of flux if the magnet is powerful enough.
What is a moving iron galvanometer?
A moving iron galvanometer is used to intensify the magnetic field by reducing the length of air gap across which the magnetic flux has to pass.
What is the function of the iron core in a transformer?
The iron core is there to provide a path for the magnetic flux to link both the primary and the secondary with as little flux as possible linking only one of the windings. The cross-section area of the core determines how much magnetic flux there is, because transformer iron has a fixed maximum flux density, usually 1 Weber per square metre. The amount of flux determines how many volts per turn there are on both windings.
Do the magnetic lines of force actually exist explain?
Yep they are called lines of flux, I believe. While invisible to the naked eye, like wind, we can see their effects. If you have iron shavings and a bar magnet, place the bar magnet on a piece of paper, then sprinkle the iron shavings all over the paper. The vast majority of them should line up along the lines of flux between the north and south pole of the magnet.
Does any material restrict magnetic flux?
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.
Why soft iron is placed in moving coil galvanometer?
1. to intensify the magnetic field by reducing the length of airgap across which the magnetic flux has to pass; 2. to give a radial magnetic flux of uniform density, thereby enabling the scale to be uniformly divided.
What is the experiments and shop test for Identifying Ferrous and nonferrous Metals and alloys?
Get a magnet, Magnets stick to ferrous metals, and do not stick to non-ferrous metals. Metals containing iron are ferrous (iron's chemical symbol: Fe). You use iron filings to see the lines of magnetic flux. Pure iron is as ferrous as you can get! Pure copper, on the other hand, is non-ferrous AND non-magnetic.
How do you calculate the magnetic field strength in an injector cyclotron?
- Magnetic field strength is the intensity of a magnetic field at a given location. Historically, a distinction is made between magnetic field strength H, measured in ampere/meter, and magnetic flux density B, measured in tesla. Magnetic field strength is defined as the mechanical force (newton) on a wire of unit length (m) with unit electric current(A). The unit of the magnetic field, therefore, is newton/ (ampere x meter), which is called tesla. The magnetic field may be visualized by magnetic field lines. The field strength then corresponds to the density of the field lines. The total number of magnetic field lines penetrating an area is called magnetic flux. The unit of the magnetic flux is tesla x m2 = weber. The older units for the magnetic flux, maxwell = 10-8 weber, and for the magnetic flux density, gauss = maxwell / cm2 = 10-4 tesla, are not to be used any more. Magnetic flux density diminishes with increasing distance from a straight current-carrying wire or a straight line connecting a pair of magnetic poles around which the magnetic field is stable. At a given location in the vicinity of a current-carrying wire, the magnetic flux density is directly proportional to the current in amperes. If a ferromagnetic object such as a piece of iron is brought into a magnetic field, the "magnetic force" exerted on that object is directly proportional to the gradient of the magnetic field strength where the object is located. ------------------------------------------------------------------- B=μH Magnetic field in Solenoid B=μnI where n is turns/m So H=nI --------------------------------------------
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.
