1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Emf induced on an eccentric rotating bar

  1. Nov 7, 2011 #1
    Suppose that a conducting bar is rotating with a speed ω, around an axis a distance a from one end, and b from the other. Suppose further that it is immersed in a uniform magnetic field B parallel to the axis of rotation, and that the measured difference of potential between both ends is V. I want to calculate the appropriate B.

    I tried calculating an infinitesimal potential difference dV appearing when an infinitesimal slice of the bar of length dr is rotating, such that the electric and magnetic force cancel: dV = ωrB dr, and then integrating this from -a to +b. This approach appears to be incorrect.

    Any hints will be appreciated.
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted