Can you add flux contributions?

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Homework Help Overview

The discussion revolves around the concept of magnetic flux and its contributions in the context of coils, specifically in relation to transformers. The original poster questions whether flux contributions can be added similarly to magnetic fields and seeks clarification on how this applies to multiple coils wrapped around a conductive material.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the relationship between the total change in flux and the individual contributions from each coil. There is a focus on understanding how the flux through each turn of a coil relates to the total flux in the context of transformer operation.

Discussion Status

Some participants have offered insights regarding the change in flux per coil, while others express confusion about the implications for transformer functionality. Multiple interpretations of the flux contributions are being explored, indicating an ongoing dialogue without a clear consensus.

Contextual Notes

There is mention of a potential misunderstanding regarding the relationship between the total flux and the flux per coil, as well as references to statements made by a physics teacher that may influence participants' reasoning.

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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