- #1
HeilPhysicsPhysics
- 16
- 0
I don't understand what is the meaning of "flux" .I just know it has some relation between eletromagnetism.Please explain what is flux to me.
Explaining the Meaning of "Flux" in Electromagnetism
- Thread starter HeilPhysicsPhysics
- Start date
-
- Tags
- Electromagnetism Flux
In summary, flux is a term used in physics to describe the rate of transfer of fluid, particles, or energy across a given surface. It can also refer to the magnetic field measured in webers, or the value of the surface integral of any vector field. If the field is constant over the area of interest, the flux is simply the product of the field and the area, and can be visualized as surface bombardment rate. It is important to note that the field and the area must be perpendicular for the flux to be accurately calculated.
- #2
Astronuc
Staff Emeritus
Science Advisor
2023 Award
- 21,913
- 6,339
It could mean field lines (e.g. magnetic flux) per unit area or flow (photons) per unit area.
Or generally flux is the rate of transfer of fluid, particles, or energy across a given surface.
Or generally flux is the rate of transfer of fluid, particles, or energy across a given surface.
- #3
Slayer26M
- 10
- 0
magnetic flux is the magnetic field measured in webers. You should read up on electromagnetic induction. http://en.wikipedia.org/wiki/Electromagnetic_induction
- #4
Gokul43201
Staff Emeritus
Science Advisor
Gold Member
- 7,220
- 24
A flux is the value of the surface integral of any vector field. If the field is constant over the area of interest, the flux is simply the product of the field and the area. Conversely, the magnitude of the field is given by the flux per unit area.
- #5
Andrew Mason
Science Advisor
Homework Helper
- 7,776
- 474
Provided the area and field are perpendicular, of course (the surface integral being the integral of the dot product of the field and the area over the surface).Gokul43201 said:
AM
- #6
Gokul43201
Staff Emeritus
Science Advisor
Gold Member
- 7,220
- 24
Dot products are products too! 
Yes, I should have been more clear. Thanks for fixing that.
Yes, I should have been more clear. Thanks for fixing that.
- #7
DryRun
Gold Member
- 838
- 4
An easier way of visualizing this: Flux is surface bombardment rate.
1. What is flux in electromagnetism?
Flux in electromagnetism refers to the flow of electromagnetic field lines through a given area. It is a measure of the strength of the magnetic field passing through a surface.
2. How is flux calculated?
Flux is calculated by taking the dot product of the magnetic field and the area vector. This can be represented mathematically as Φ = B * A * cos(θ), where Φ is the flux, B is the magnetic field, A is the area, and θ is the angle between the magnetic field and area vectors.
3. What is the unit of flux?
The unit of flux is weber (Wb) in the International System of Units (SI). It can also be expressed in tesla (T) multiplied by square meters (m^2).
4. How does flux relate to Faraday's law?
Flux plays a crucial role in Faraday's law, which states that the induced electromotive force (EMF) in a closed loop is equal to the negative rate of change of magnetic flux through the loop. This relationship is expressed mathematically as EMF = -dΦ/dt, where EMF is the induced electromotive force and Φ is the flux.
5. What are some real-life applications of flux in electromagnetism?
Flux is used in various technologies such as electric generators, transformers, and motors. It also plays a significant role in wireless charging, as the changing flux through a coil can induce a current in another nearby coil without physical contact. Additionally, flux is important in understanding the behavior of magnetic materials and in the study of electromagnetic waves.
Similar threads
-
Electromagnetism
-
Electromagnetism
-
Electromagnetism
-
Electromagnetism
-
Electromagnetism
-
Electromagnetism
-
Electromagnetism
-
Electromagnetism
-
Electromagnetism
-
Electromagnetism