Electric charges and large bodies

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SUMMARY

The discussion clarifies that large bodies like Earth and the Moon have a net electric charge close to zero, despite possessing magnetic fields. It emphasizes that electric fields and magnetic fields are distinct phenomena; the Earth's magnetic field arises from moving charges rather than a net charge. The conversation highlights that a net charge would produce an electric field, which is not the case for Earth.

PREREQUISITES
  • Understanding of electric charge and its properties
  • Basic knowledge of magnetic fields and their generation
  • Familiarity with the concepts of electric fields
  • Knowledge of current and its relation to charge movement
NEXT STEPS
  • Research the principles of electromagnetism and its applications
  • Study the differences between electric fields and magnetic fields
  • Explore the concept of net charge in large bodies
  • Learn about the Earth's magnetic field generation mechanisms
USEFUL FOR

Students of physics, educators in electromagnetism, and anyone interested in understanding the relationship between electric and magnetic fields in large celestial bodies.

kenewbie
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According to my book the electric charge of large bodies like the Earth and the moon is pretty close to zero. But the Earth has poles and a magnetic field, which suggests that it isn't uniformly distributed at all. These two things SEEM contradictory to me, what is it that I am not getting?

k
 
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Note that electric fields and magnetic fields are not the same thing, the fact that the Earth has a magnetic field has nothing to do with its net charge. Magnetism is caused by currents - moving charge - but there does not need to be a net charge for there to be a current.

Now, if the Earth had a net charge, or if the charge in the Earth was not distributed very prettily, the planet would produce an electric field.
 
That made a lot of sense thank you
 

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