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!

Effect of Hall effect on resistance

  1. Jun 30, 2011 #1
    (The topic was previously posted in Electrical Engineering forum)
    The charge carriers in a current carrying wire subjected to a magnetic field will move to a side due to the Hall effect. But doesn't that also decrease the effective cross section area through which the charge carriers are moving? Does the resistance increase? If so, how significant is it in electric machines like motors?
    Last edited: Jun 30, 2011
  2. jcsd
  3. Jul 1, 2011 #2


    User Avatar
    Science Advisor
    Gold Member

    Keep in mind the capacitance of the conductor is very small so, although a magnetic field does slightly "compress" the electron gas, the density will not change appreciably and thus neither will the effective conducting cross section.

    (Note though that magnetic fields can affect conductivity through other mechanisms.)
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Effect of Hall effect on resistance
  1. Hall effect (Replies: 19)

  2. Hall effect? (Replies: 1)

  3. Hall effect (Replies: 3)