Magnetic Flux Density Direction

In summary, the direction of the Magnetic Flux Density vector B at the south side is towards the south pole. It is also correct for the other side. The term "flux density" is interchangeable with "magnetic field" and is calculated by multiplying the magnetic field by the area. Despite its name, it is still a vector and can be represented as such.
  • #1
DiamondV
103
0
bar-magnet-magnetic-field.jpe


Would the direction of the Magnetic Flux Density vector B at the south side be towards the south pole like this?
83ef8b1767.jpg


and is the direction for B correct for the other side?

One more thing, how can magnetic flux density be a vector and have a direction when its sort of a density, I mean its over an area, how can you make that a single vector? Its sort of like a property.
 
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  • #2
1. I don't see the difference between the two figures, except that you drew two extra arrows. Both figures are correct. The field is toward the south pole, and out of the north pole.
2. Don't read too much into the name. The same "flux density" is also called the magnetic field B. The magnetic flux through an area is defined as the magnetic field multiplied by the area (actually a dot product between B and the area vector A). So if you want to call magnetic field as the magnetic flux divided by the area, and thus call it the magnetic flux density, so be it. It is still the magnetic field, and is an honest to goodness vector.
 

What is magnetic flux density direction?

Magnetic flux density direction, also known as magnetic field direction, refers to the direction in which a magnetic field is exerting force or influence. It is typically measured in units of teslas (T) or gauss (G).

How is magnetic flux density direction measured?

Magnetic flux density direction is measured using a device called a magnetometer, which can detect and measure the strength and direction of magnetic fields. Other methods of measurement include using a compass or a Hall effect sensor.

What factors influence the direction of magnetic flux density?

The direction of magnetic flux density is influenced by the direction of the electric current, the orientation of the magnetic material, and the position and strength of nearby magnets or electric fields.

Why is understanding magnetic flux density direction important?

Understanding magnetic flux density direction is important in a variety of fields, including physics, engineering, and geology. It is essential for designing and operating electrical systems, studying magnetic materials, and navigating using compasses or magnetic sensors.

How can the direction of magnetic flux density be changed or controlled?

The direction of magnetic flux density can be changed or controlled by altering the orientation or strength of nearby magnets or electric currents. Materials with unique magnetic properties, such as ferromagnetic or paramagnetic materials, can also influence the direction of magnetic fields.

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