- #1
How the reluctance in a magnetic circuit depends on flux?
- Thread starter Aswin Sasikumar 1729
- Start date
In summary, reluctance is a property of the medium through which flux is pushed and is equal to the length divided by the product of permeability and area of cross section. Reluctance does not change with flux, except in the case of ferromagnetic materials with a BH saturation curve. Otherwise, permeability is a constant, with the exception of ferromagnets which have a varying permeability based on the material's BH curve.
- #2
Aswin Sasikumar 1729
- 19
- 0
Length divided by product of permeability and area of cross sectionAswin Sasikumar 1729 said:
- #3
jim hardy
Science Advisor
Gold Member
Dearly Missed
- 9,832
- 4,895
That's a property of whatever is the medium through which you are pushing the flux.Try starting hereAswin Sasikumar 1729 said:
https://en.wikipedia.org/wiki/Permeability_(electromagnetism)
and would you be polite enough to rotate your image 90 degrees ccw?
- #4
Aswin Sasikumar 1729
- 19
- 0
Sorry for the inconveniencejim hardy said:
- #5
jim hardy
Science Advisor
Gold Member
Dearly Missed
- 9,832
- 4,895
Aswin Sasikumar 1729 said:
It's okay, you're pretty new here.
Aswin Sasikumar 1729 said:
You already know the answer.
Length and cross section are not dependent on flux (excepting maybe magnetorestriction in iron)
that leaves permeability
which for free space is a constant
and
as that Wiki article explains for most other materials is very near the same constant
the big exception being ferromagnetic materials
which have the classic BH saturation curve.
Simplified comparison of permeabilities for: ferromagnets (µf), paramagnets (µp), free space (µ0) and diamagnets (µd)
Related to How the reluctance in a magnetic circuit depends on flux?
1. How is the reluctance in a magnetic circuit defined?
The reluctance in a magnetic circuit is a measure of the opposition to the flow of magnetic flux in a material. It is analogous to resistance in an electrical circuit.
2. What is the formula for calculating reluctance in a magnetic circuit?
The formula for calculating reluctance in a magnetic circuit is R = l/µA, where R is the reluctance in ampere-turns per weber (At/Wb), l is the length of the magnetic path in meters (m), µ is the permeability of the material in henries per meter (H/m), and A is the cross-sectional area of the magnetic path in square meters (m^2).
3. How does the reluctance in a magnetic circuit depend on flux?
The reluctance in a magnetic circuit is inversely proportional to the flux passing through the circuit. This means that as the flux increases, the reluctance decreases, and vice versa.
4. What factors affect the reluctance in a magnetic circuit?
The reluctance in a magnetic circuit is affected by the material used, the length and cross-sectional area of the magnetic path, and the permeability of the material. It also depends on the presence of air gaps or other non-magnetic materials in the circuit.
5. How does the reluctance in a magnetic circuit impact the performance of a device?
The reluctance in a magnetic circuit can affect the efficiency and performance of devices that rely on magnetic fields, such as electric motors and generators. A higher reluctance can lead to energy losses and decreased efficiency, while a lower reluctance can improve performance and reduce energy consumption.
Similar threads
-
Electrical Engineering
-
Electrical Engineering
-
Introductory Physics Homework Help
-
Electromagnetism
-
Electrical Engineering
-
Electromagnetism
-
Electrical Engineering
-
Electromagnetism
-
Electrical Engineering
-
Electrical Engineering