Differences between Electromagnetic flux and magnetic flux

AI Thread Summary
Electromagnetic flux is often confused with magnetic flux, as the former typically refers to the flux associated with electromagnets, while the latter is a broader term encompassing all magnetic fields. In permanent magnet machines, only magnetic flux is present, as they do not generate electromagnetic flux like electromagnets do. The stator cores of these machines, especially when wound with copper wires, will experience magnetic flux due to the permanent magnets. For effective magnetic flux shielding in large stator cores, materials like soft iron are recommended, particularly for high magnetic fields. Understanding these distinctions is crucial for applications involving magnetic flux in engineering contexts.
vunteng
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May I know that are there any different between the electromagnetic flux and magnetic flux?

Are there any electromagnetic flux in a permanent magnet machine?

What kind of flux will go through the permanent magnet machine's stator cores with copper wires on it?

I am really sorry to ask so many questions in one go. However, I really need help to make myself clear on this concept.

Thank you in advance for the helping!
 
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welcome to pf!

hi vunteng! welcome to pf! :smile:

i've never heard of electromagnetic flux :confused:

the flux from an electromagnet (or any other magnet) is ordinary magnetic flux

where did you see "electromagnetic flux"?​
 
Actually I am looking for a material which is magnetic flux shielding. It is to hold the large size of stator core which around 1m long and 0.2m wide, so it must me very strong and magnetic flux shielded.

Can you please suggest me few materials in the above properties?
 
For high magnetic fields (above a few Gauss), boxes made of soft iron are good. Remember that H-parallel (tangential component of H) is continuous across an air-iron boundary. See picture of clock in

http://www.tpub.com/neets/book1/chapter1/1j.htm
 

Thread 'Why measure the speed of light in one direction?'

It may be shown from the equations of electromagnetism, by James Clerk Maxwell in the 1860’s, that the speed of light in the vacuum of free space is related to electric permittivity (ϵ) and magnetic permeability (μ) by the equation: c=1/√( μ ϵ ) . This value is a constant for the vacuum of free space and is independent of the motion of the observer. It was this fact, in part, that led Albert Einstein to Special Relativity.
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