1. Not finding help here? Sign up for a free 30min 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!

Parallel Plates

  1. Apr 11, 2008 #1
    1. The problem statement, all variables and given/known data

    Two oppositely charged parallel plates, 13.0 cm apart, have a uniform electric
    field between them. Vb − Va = +25.0 V. An electron with a mass of
    9.11 × 10−31 kg and a charge of −1.60 × 10−19 C is released from rest at plate a.
    Calculate the speed of the electron when it reaches plate b.

    | |
    | |
    | |
    a b



    3. The attempt at a solution

    E=V/d = 25/.13 = 192.3J

    I also need you need to find accel. but im not sure how.

    please help, thanks
     
  2. jcsd
  3. Apr 11, 2008 #2

    nrqed

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member


    What is the equation for the electric force on a charge in an electric field?
     
  4. Apr 11, 2008 #3
    E=kq/d^2
     
  5. Apr 11, 2008 #4

    pam

    User Avatar

    Use conservation of energy.
     
  6. Apr 11, 2008 #5
    oh, and the answer is

    2.96 × 10^6 m/s
     
  7. Apr 11, 2008 #6
    Vq=1/2mv^2


    But im still getting the wrong answer
     
    Last edited: Apr 11, 2008
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Parallel Plates
  1. Parallell plates (Replies: 2)

Loading...