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Electron Acceleration

  1. Jan 22, 2007 #1
    1. The problem statement, all variables and given/known data
    In x-ray machines, electrons are subjected to electric fields as great as 6 x 10^5 N/C. Find an electron's acceleration in this field. ( me = 9.1 x 10^-31kg, qproton= 1.6 x 10^-19C)



    3. The attempt at a solution


    can someone just point me in the right direction to solve this? a site with information etc. would help. I dont have the correct book for the class yet and I cant seem to find the info I need in this old book. Thanks
     
    Last edited: Jan 22, 2007
  2. jcsd
  3. Jan 22, 2007 #2

    Kurdt

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    An electric field is the force per unit charge. What do you know about force and acceleration, and what do you know about the charge of an electron?
     
  4. Jan 22, 2007 #3

    ranger

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    Well here is a hint. The acceleration depends on the strength of the electric field and the charge of the particle. Also the mass of the particle has something to do with it. Are these enough hints for you?

    Edit: sorry for stepping in Kurdt. you replied whilst I was typing this up
     
    Last edited: Jan 22, 2007
  5. Jan 22, 2007 #4
    ok so I use:

    E = F / q (E= electronic field, F= force, q= charge)

    6x10^5 = F / 1.6x10^-19

    gives me:

    F= 9.6x10^-14

    then we use F=M*A to find the acceleration:

    9.6x10^-14 / 9.1x10^-31 = A = 1.05x10^17

    is this correct?
     
  6. Jan 22, 2007 #5

    Kurdt

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    looks fine
     
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