Can you add flux contributions?

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The discussion focuses on whether flux contributions from multiple coils can be added similarly to magnetic fields. A user questions if the change in flux through each turn of a second coil wrapped around a material is BA/10 or BA when a first coil is activated. It is clarified that if the total change in flux in the second coil is BA, then each turn experiences BA/10. This creates confusion regarding how transformers operate, as the user recalls being taught that each coil experiences the same change in flux, which is essential for voltage transformation. The conversation highlights the complexities of understanding flux behavior in electromagnetic systems.
minifhncc
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Hello,

I've got a question regarding flux.

Can you add flux contributions like you can add magnetic fields together?

To illustrate my point, consider a single coil wrapped around a material that conducts flux. A 10 coil is wrapped around the same material. [like a transformer]

When I turn the first single coil on, it produces a magnetic field. So it could cause a change in flux in the 2nd coil (say BA)...

Does the flux of each coil of the second coil change by BA? or by BA/10? I'm a bit confused by this :(

Logic would tell me that it's BA/10 so the total change in flux is BA... or can't you add flux like that? Because, if you actually do that then it defies the logic how transformers work ...

Thanks
 
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If the total change in flux in the second coil is BA, then the change in flux through each turn would be BA/10.
 


graphene said:
If the total change in flux in the second coil is BA, then the change in flux through each turn would be BA/10.

Then how does a transformer work? Because I think my Physics teacher said that the change in flux for each coil is the same, hence that's why the voltage can be stepped up...
 


Hi,

Also, if the first coil produces a magnetic field of B, then the flux through each coil of the second coil would be BA, wouldn't it?
 


yes.
 


graphene said:
yes.

But that's contrary to what you said before :S
 

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