About magnetic field attraction

In summary, when a piece of iron is placed close to a magnet, it becomes magnetized and the little magnets within the iron align with the external magnetic field. This causes the poles of the iron to be attracted to the poles of the magnet, regardless of the orientation of the iron. This is due to the ferromagnetic properties of the iron.
  • #1
Evagoras
2
0
We know a magnet has field with direction from North to South. Why when a piece of iron come close to the magnet can either be attracted and from both sites and not for example from one pole?
 
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  • #2
This is because the iron becomes magnetized. You can imagine the piece of iron as being made up of many tiny little magnets (domains) in random directions such that in the absence of an external magnetic field, all those little magnets cancel each other out. When the iron is placed close to the magnet the little magnets aka 'domains' align with the external field in such a way that the poles of the iron are attracted to the poles of the magnet. If the external field is flipped, the domains are flipped. So it doesn't really matter how the iron is oriented, ultimately the domains in the iron will arrange themselves so that the iron is attracted to the magnet. This is a property of ferromagnetic materials
 
  • #3
Thank you
 

Related to About magnetic field attraction

1. What is a magnetic field?

A magnetic field is an invisible force field that surrounds a magnet or an electric current. It is responsible for the attraction or repulsion of magnetic materials.

2. How does magnetic field attraction work?

Magnetic field attraction occurs when opposite poles of two magnets are brought close together. The magnetic field lines from one magnet interact with the magnetic field lines from the other magnet, causing them to attract each other.

3. What factors affect the strength of magnetic field attraction?

The strength of magnetic field attraction is affected by the distance between two magnets, the strength of the magnets themselves, and the orientation of their poles.

4. Can magnetic field attraction be turned on or off?

Yes, magnetic field attraction can be turned on or off by manipulating the electric current that creates the magnetic field. For example, an electromagnet can be turned on by connecting it to a power source and turned off by disconnecting it.

5. What are some real-world applications of magnetic field attraction?

Magnetic field attraction has many practical applications, such as in motors, generators, speakers, and MRI machines. It is also used in magnetic levitation trains and magnetic compasses for navigation.

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