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Magnetic field and metal box

  • Thread starter Jahnavi
  • Start date
  • #1
848
102

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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Answers and Replies

  • #3
848
102
Sorry . I can't see how the above two play a role . Could you explain .
 
  • #4
rude man
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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.
 
  • #5
848
102
Thanks !
 

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