What Happens to Metal Boxes in Magnetic Fields?

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Homework Help Overview

The discussion revolves around the behavior of metal boxes in magnetic fields, with a particular focus on concepts like eddy currents and magnetic permeability. The original poster expresses confusion regarding the relationship between these concepts and the lack of information in their textbook.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the connection between Faraday cages and magnetic fields, questioning how eddy currents and the magnetic permeability of materials like copper might relate to the original poster's inquiry.

Discussion Status

Some participants have provided hints and references to relevant concepts such as Lenz's Law and eddy currents, while others seek further clarification on how these ideas apply to the problem at hand. The discussion appears to be ongoing with multiple lines of reasoning being explored.

Contextual Notes

The original poster notes a lack of information in their textbook regarding the topic, which may influence their understanding and the direction of the discussion.

Jahnavi
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Homework Statement


copper box.png


Homework Equations

The Attempt at a Solution



I have honestly no idea about this concept . Book doesn't mention anything about this . This looks similar to Faraday cage in electrostatics . But I don't understand how this works in case of magnetic fields .

Is this related to eddy currents or high permeability of metal ?
 

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Sorry . I can't see how the above two play a role . Could you explain .
 
The hint I can give you is Eddy currents.
Once you look up the permeability of copper you will realize that there is no high-permeability shielding involved. But by faraday, a time-changing B field induces currents which will set up their own B fields. Combine this fact with what scottdave hinted about Lenz's laws and you should be able to come up with an idea.
 
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Thanks !
 

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