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Torque of charged rotating disc in uniform magnetic field

  1. Nov 29, 2015 #1
    Hi, I'm having an issue with finding a starting point for the following problem. I've looked through my magnetism and electrodynamic notes but was unable to find a starting point. Could someone please help direct me on the correct path? Thank you.
    1. The problem statement, all variables and given/known data
    A thin circular disc of radius ##R## rotates with angular speed ##\omega## about an axis through
    the centre of the disc and perpendicular to the plane of the disc. A uniform magnetic field
    ##\mathbf{B}## acts parallel to the plane of the disc. If the disc is uniformly charged with a surface
    density ##\sigma##, derive an expression for the magnitude of the torque on the disc, in terms of
    ##|\mathbf{B}|##, ##R##, ##\omega## and ##\sigma##.
     
  2. jcsd
  3. Dec 4, 2015 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
     
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