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!

Electron in an electirc field.

  1. Feb 21, 2007 #1
    1. The problem statement, all variables and given/known data

    Across what potential difference does an electron have to be accelerated in order to reach speed v=1.80×106 m/s?

    2. Relevant equations

    I checked to see if relitivity was important and it was not
    E=.5 m v^2=eV

    3. The attempt at a solution

    I dunno if I am mistaken in what I am trying to find but I thought the potential difference in this case was .5mv^2 But when I plug in 9.109x10^-31 kg in for the mass and 1.8x10^6 m.s for the velocity I don't get the right answer. I do not know what I am doing wrong.
  2. jcsd
  3. Feb 21, 2007 #2
    I figured out what I was doing wrong. It was in Joules and I needed to convert to Volts.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Electron in an electirc field.
  1. Electirc Field Help (Replies: 3)

  2. Electronic field (Replies: 1)

  3. Electron Field (Replies: 1)