What is Magnetic Flux? Definition, Properties, and Density

Magnetic Flux: Definition, Properties, and Density

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What is magnetic flux? Magnetic flux as the total number of magnetic lines of force in a magnetic field. Magnetic flux is an estimation of the absolute attractive field which goes through a given area. It is a valuable instrument for portraying the impacts of the attractive power on something involving a given area. The estimation of magnetic flux is attached to the particular area chosen. We can choose to make the area any size we want and orient it in any way relative to the magnetic field.

If we place an imaginary isolated unit north pole in a magnetic field it will encounter a horrible power from north pole and an attractive force from south pole of the magnet which has made the field.

Due to these both forces, acting on the isolated unit north pole, the north pole will move along a particular path in the field if the pole is free to do so. If we place the same isolated unit north pole at different distance from the magnet in the field, it may follow a different path of traveling.

What is Magnetic Flux? Definition, Properties, and Density

We call these paths of traveling of the unit north pole in the field, as lines of force. As we can place this imaginary isolated unit north pole at infinite number of points in the field, there may be infinite numbers of lines of force in the field.

But visualize a magnetic field with infinite number of lines of force is useless for any scientific calculation. So we need to build up some one of a kind idea, with the goal that we can represent a magnetic field as indicated by its whole quality. We take the unit of magnetic flux as weber.

If a field has φ weber flux, it means the field has total φ number of lines of force. Like separated north pole, the idea of lines of power in a magnetic field is also imaginary. It does not has any physical existence. This is only used for different magnetic calculation and for explaining different magnetic properties. After we know magnetic flux definition, we will discuss properties of magnetic flux and magnetic flux formula. Let’s see below.

See Also: Electric Flux and Electric Flux Density Definition

Properties of Magnetic Flux

Magnetic flux has 6 properties, are:

  1. Magnetic flux of a filed is considered as the total number of magnetic lines of force in the field. These are also called magnetic flux lines.
  2. Each magnetic flux line is closed loop.
  3. Each magnetic flux line starts from north pole of a magnet and comes to the south pole through the field and continues from south pole to north pole in the body of the magnet.
  4. No two flux lines cross each other.
  5. Two similar lines of force travel side by side but repeal each other.
  6. The lines of force are stretched like elastic cord.

See Also: Quality Factor of Inductor (Inductor Q)

Magnetic Flux Density Formula

The number of magnetic lines of force passing through a unit area surface perpendicular to the magnetic field is called magnetic flux density. If total φ Weber flux perpendicularly through a surface of area A m2, Magnetic flux density of the field would be:

Magnetic flux density formula:

We generally represent magnetic flux density by capital letter B.

See Also: Mutual Inductance: Definition and Formula

Magnetic Flux Conclusion

After going through the above portion of properties of magnetic flux we can now establish a magnetic flux definition and formula. I hope you enjoy when reading this article, thank you.