Does this device give a magnetic field?

  • #1
421
0
Hello,

It's a theoretical question. I take 2 electrostatic particules fixed in a circle. I turn the circle. Is there a magnetic field ? I suppose the angular velocity very high and I suppose the particules are fixed in the circle. The diameter of the circle is very small. I don't want the electromagnetic wave but the magnetic field at low frequency : magnetostatics.

case1/
http://imageshack.com/a/img537/2970/jIKEwq.png [Broken]

case2/
http://imageshack.com/a/img540/3374/ldkDxd.png [Broken]

Regards
 
Last edited by a moderator:

Answers and Replies

  • #2
30,136
6,567
Hello,

It's a theoretical question. I take 2 electrostatic particules fixed in a circle. I turn the circle. Is there a magnetic field ? I suppose the angular velocity very high and I suppose the particules are fixed in the circle. The diameter of the circle is very small.
Look at the Lienard Wiechert potentials. What do they say?

https://en.m.wikipedia.org/wiki/Liénard–Wiechert_potential
 
  • #3
421
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It's only for one particle ? And I'm looking for the magnetic field at low frequency not the electromagnetic wave.
 
Last edited:
  • #4
30,136
6,567
Maxwells equations are linear. Just use superposition.
 
  • #5
421
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Sorry, but I don't undertand how to use your link to find the magnetostatic field, could you explain please ?
 
  • #6
30,136
6,567
Calculate the field due to each charge, as described in the link. Then just add them together to get the total field.
 
  • #7
421
0
Ok, and to have the magnetostatic field ?
 

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