anonymous
  • anonymous
What is the source of the magnetic field in a permanent magnet? A. the spin and orbital motion of electrons B. long-range electric currents that are always present in iron C. net electric charge at the poles of a magnet D. the motion of iron nuclei
Physics
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anonymous
  • anonymous
What is the source of the magnetic field in a permanent magnet? A. the spin and orbital motion of electrons B. long-range electric currents that are always present in iron C. net electric charge at the poles of a magnet D. the motion of iron nuclei
Physics
jamiebookeater
  • jamiebookeater
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Michele_Laino
  • Michele_Laino
it is option A
Michele_Laino
  • Michele_Laino
that's the Ampere theory
Michele_Laino
  • Michele_Laino
more explanation: a circular current generates a magnetic dipole

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anonymous
  • anonymous
ohhh ok! :) thanks!
Michele_Laino
  • Michele_Laino
and we can know the magnitude of the magnetic field due to a single magnetic dipole
Michele_Laino
  • Michele_Laino
:)
anonymous
  • anonymous
ahh okie yay!:) thanks!!

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