1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

Current and Drift Velocity (multiple choice)

  1. Feb 5, 2008 #1
    [SOLVED] Current and Drift Velocity (multiple choice)

    1. In a dental X-ray machine, the movement of accelerated electrons is east. The current associated with these electrons is in what direction: (a) east, (b) west, or (c) zero?

    3. At first I thought it was B (west) because as the electrons(-ve charge) are moving east, it is equivalent to a +ve charge moving west, conventional current towards west. But then it seems as if the answer could be C (zero). Which answer is correct?
  2. jcsd
  3. Feb 5, 2008 #2
    Accelerated electrons always constitute a current provided that majority of the acceleration contributes to the same direction, which in your case is east.

    and yes.. the current is going west as u said..
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook