Question

Define magnet and types of magnet ​

Answer 1

Answer:

The three types of magnets are temporary, permanent, and electromagnets. Magnets are categorized by their source of magnetism. Temporary magnets become magnetized in the presence of a magnetic field. They lose their magnetism gradually, when the magnetic field is removed.

Answer 2

$\huge\star\underline\mathtt\purple{Answer:-}$

$\small\red{\sf { MAGNET :- }}$

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. 

$\small\green{\sf { TYPES \: OF \: MAGNET \: }}$

There are three types of magnets, and they are as follows:

• Permanent magnet

• Temporary magnet

• Electromagnets

Permanent Magnet

Permanent magnets are those magnets that are commonly used. They are known as permanent magnets because they do not lose their magnetic property once they are magnetized.

Following are the ways to demagnetize the permanent magnets:

• Exposing magnets to extreme temperatures.

• The magnetic attraction between the magnet’s atoms gets loosen when they are hammered.

• Stroking one magnet with the other in an inappropriate manner will reduce the magnetic strength.

There are four types of permanent magnets:

• Ceramic or ferrite

• Alnico

• Samarium Cobalt (SmCo)

• Neodymium Iron Boron (NIB)

Temporary Magnet

Temporary magnets can be magnetized in the presence of a magnetic field. When the magnetic field is removed, these materials lose their magnetic property. Iron nails and paper-clips are examples of the temporary magnet.

Electromagnets

Electromagnets consist of a coil of wire wrapped around the metal core made from iron. When this material is exposed to an electric current, the magnetic field is generated making the material behave like a magnet. The strength of the magnetic field can be controlled by controlling the electric current.