What are the applications of magnets in life? The principle of magnets

Magnets are widely used in people's daily life. They can generate magnetic fields and have the characteristics of attracting ferromagnetic materials such as iron, nickel, cobalt and other metals. The components of magnets are iron, cobalt, nickel and other atoms. The internal structure of the atoms is relatively special and has magnetic moments. Today we will take a look at the principle of magnets with you, and hope it will be useful to you.

Contents of this article

1. What are the applications of magnets in life?

2. The principle of magnet

3. Can magnets generate electricity?

What are the applications of magnets in life?

Relay low voltage controls high voltage actuator, reversing valve in washing machine and air conditioner, fuel injector of automobile high pressure common rail system and solenoid valve in ventilator, etc. Magnet is a substance with special internal structure of atoms such as iron, cobalt and nickel, which has magnetic moment. Magnet can generate magnetic field and has the property of attracting ferromagnetic materials such as iron, nickel, cobalt and other metals. There are many types of magnets: square magnet, tile magnet, special-shaped magnet, cylindrical magnet, ring magnet, disc magnet, bar magnet and magnetic frame magnet.

The principle of magnet

The principle is that magnets can generate magnetic fields and have the characteristics of attracting ferromagnetic materials such as iron, nickel, cobalt and other metals. The components of magnets are iron, cobalt, nickel and other atoms. The internal structure of the atoms is relatively special and has magnetic moments. Magnets can be divided into permanent magnets and non-permanent magnets. Permanent magnets can be natural products, also known as natural magnets, or they can be artificially made. Non-permanent magnets, such as electromagnets, only show magnetism under certain conditions and are widely used in people's daily lives.

Can magnets generate electricity?

Magnetoelectricity was discovered by Faraday.

Principle: When a part of the conductor of a closed circuit moves to cut the magnetic lines of force, a current is generated on the conductor. This phenomenon is called electromagnetic induction, and the current generated is called induced current.

Conditions for generating induced current:

1. A part of the conductor moves in a magnetic field in a manner that cuts the magnetic flux lines. That is, the direction of movement of the conductor in the magnetic field is not parallel to the direction of the magnetic flux lines.

2. The circuit is closed. The conductor that cuts the magnetic flux lines in the magnetic field generates an induced voltage at both ends, which is a power source. If the circuit is closed, an induced current will be generated in the circuit. If the circuit is not closed, there is an induced voltage at both ends of the circuit, but no induced current in the circuit.