If a bar magnet is suspended horizontally through a string allowed to come to res it will point in noth-south direction. The end of the magnet that points north is called the north magnetic pole (N). The end that points south is the south magne pole (S).
How the freely suspended bar magnets are placut poses to each other, the te north poles will repel each other. So will the two south poles. However, if the north pole of one is placed near the south pole of the other, the poles will attract. We can say that like poles repel and unlike poles attract.
Working purpose for identification an object is a magnet or simply a magnetic material, we can bring its one end close to any pole of a suspended bar magnet. Ifit is attracted, then what we can conclude that the end of the object is either of opposite pole to that of the suspended magnet or it is simply a magnetic material. Then we should bring the same end of the object close to the other end of the suspended magnet. If the object is again attracted, it is not a magnet but it is a magnetic material.
No. it is not possible. Each piece will have its two poles, i.e. N-pole and S-pale. Even it a magnet is divided into thousands pieces, each piece will be a complee
magnet with its, N and S-poles. Ans. There are many types of permanent magnetic materials. These are cobalt alnico and ferrite.
The strongest permanent magnets are made form Alloy of neodymium, iron boron to form Nd, and Fe B structure.
The magnetic lines of force around a bar magnet can be drawn by using a compass. The needle of the compass will move along the magnetic lines of force core magnetic lines of dized by an araw be magnet drawn by this methodorce compass needle is symbolized by an arrow being the north pole
The field lines originated from the north pole and end on south pole.
Because theinx-called neutral poignets cancel out that due to other magnets. Therefore point
We observe that the strength of the magnetic field in each case increase. This will be indicated by the more number of clips held by the nail.
A circuit breaker is designed to pass a certain maximum current through it safely. If the current becomes excessive, it switches OFF the circuit. Thus, electric appliances are protected form burning. Inside a circuit breaker, the current flows along a copper strip, through the iron armature and coil of electromagnet. The electromagnet attracts the armature. If the current is large enough, the armature is detached from the copper strip and the circuit breaks.
Steel is not so easily oriented to change order. It requires very strong external field, but once, oriented, retains the alignment. That is why steel is used to make permanent magnet.
Yes, a magnet can be demagnetized by storing it near another magnet. The opposing magnetic field can cause the magnetic domains to become randomly aligned, resulting in a loss of magnetic field.
An alternating current demagnetizes a magnet by repeatedly reversing the direction of the magnetic field. This causes the magnetic domains to become randomly aligned, resulting in a loss of magnetic field.
Iron is more effective as a magnetic shield then other materials because of its high permeability, which allows it to become strongly magnetized and absorb the external magnetic field.
No, iron cannot completely eliminate a magnetic field. While it can reduce the magnetic field strength, some magnetic field lines may still pas though the iron shield.
Astron is the purpose of using iron protect objects from external magnetic field.
18. Ans. Permanent magnets are disk drives. What type of permanent magnet is commonly used in refrigerator magnets?
19. the ferrite, a ceramic material.? ans They are also used in other application such as magnetic hooks and magnetic catches.
Permanent magnets are primarily used to produce a constant magnetic field. This magnetic field is used in various applications such as electric motors, generator and magnetic resonance imaging (MRI) machines.
21. How do domains align when a magnetic material is placed in a magnetic field, the domains align Ans. When a magnetic material is placed themselves in the direction of the magnetic field,
Magnetization is used in electromagnets to produce a strong magnetic field, which is used in various applicatinos such as motors, generators, and transformers.
Heat causes the domains of a magnetic materials to become randomly aligned resulting in a loss of magnetization.
The domain theory of magnetism states that a magnetic material is divided into a small regions called domains, each having it's own magnetic field.
The principle behind a magnetic recording is the alignment of magnetic do mains in a magnetic material to represent digital data.
A magnetic tape works by aligning the magnetic domains on the tape to represent digital data, which is then ready by a magnetic head.
A hard disk derive works by aligning the magnetic domains on a magnetic disk to represent digital data, which is then read by a magnetic head.
The advantage of magnetic recording is that it allows from high-density data storge and fast data retrival.
A magnetic disk is a flat, circular disk coated with a magnetic material used for a storing digital data.
