What is magnet? Explain Properly.
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⇒ Magnet is a substance which attract iron or iron like substances.
1). Natural Magnet: These are divided into two parts,
a). Load Stone (Fe2O3).
b). Earth.
2). Artificial Magnet: These are divided into two parts,
a). Permanent magnet: These are further divided into three types.
- Bar magnet.
- U shape magnet.
- Horse shoe magnet.
b). Temporary magnet: These are divided in one part,
- Electro magnet.
- A bar magnet is a rectangular object that has a magnetic field.
- It is usually made of iron and steel, but it can also be made of any ferromagnetic substances or ferromagnetic composite.
- This is a permanent magnet.
- Magnetic lines of ores starts from north and towards south outside the magnet.
- A freely suspended magnet always point out north to south direction that is it shows directive property.
- Same poles of a magnet shows the repulsion while unlike shows alteration property.
- A horseshoe magnet is a U-shaped metal object that produces a magnetic field.
- This magnetic field is invisible, but is responsible for a magnet's notable pull on other metal objects.
- It is a permanent magnet.
Answered by
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- A magnet is a material or object that produces a magnetic field.
- This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, and attracts or repels other magnets.
- Permanent Magnet.
- Temporary Magnet.
- Electromagnet.
- Permanent magnets are those which retain their magnetism when once magnetized. Most of the magnets we come across in our daily life are permanent magnets.
- Example Bar magnet, horse shoe magnet etc.
- Temporary magnets show magnetism only when they are kept in the vicinity of some strong magnetic field.
- They lose their magnetism when the field is removed.
- Electromagnets work on the principal of electromagnetic induction. They are usually made by wounding wire around a soft iron core.
- Their magnetism can be changed by changing the amount of current.
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