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Homework Help: Magnitude & Direction of Electric field

  1. Nov 26, 2014 #1
    What are the magnitude and direction of the electric field that will balance the weight of (a) an electron and
    (b) a proton?

    Please I am getting confused in this question. I want help with complete explanation. Thanks in advance. How will it done..?
  2. jcsd
  3. Nov 26, 2014 #2


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    Science Advisor
    Gold Member

    Do you have any ideas where to start?

    Some hints: 1) draw a force diagram, it should just have 2 forces. 2) what is the weight of an electron/proton, and how are they affected by an electric field? (i.e. what force is exerted on them by an electric field?)
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