What is the Difference Between Flux and Flux Density?

The difference between flux and flux density lies in their definitions and how they are measured:

• Flux: Flux is a measurement of the total number of magnetic field lines passing through a given area. It represents the total amount of magnetic field lines present in a specific region.
• Flux Density: Flux density is a measurement of the density of magnetic field lines. It is another name for the magnetic field strength (B) and is usually measured in units like teslas, microteslas, or gauss.

In essence, magnetic flux is the total number of magnetic field lines passing through an area, while flux density is the strength of the magnetic field lines in that area. The magnetic flux in a given area can be calculated as the product of the flux density and the area. Finally, changes in magnetic flux can be attributed to changes in the area, magnetic field strength, and the angle between the magnetic field lines and the normal of the surface.

Comparative Table: Flux vs Flux Density

Here is a table comparing the differences between flux and flux density:

Flux is defined as the number of lines of force present in a physical medium, such as magnetism, electric charges, or gravity. Flux density, on the other hand, refers to the total number of lines of force passing through a given area. In electromagnetism, the magnetic flux density, symbolized as B, represents the force experienced by a charged particle in a magnetic field.