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Homework Help: Finding Electric Force between 2 parallel plates

  1. Oct 2, 2011 #1
    1. The problem statement, all variables and given/known data
    An alpha particle is placed between two horizontal parallel charged plates that are 2.00 cm apart. The potential difference between the plates is 12.0 V.

    WHAT is the ELECTRIC FORCE acting on the alpha particle?

    -Mass of alpha particle: 6.65 x 10^-27 kg

    2. Relevant equations
    E = V/d
    E = F/q

    3. The attempt at a solution
    E = V/d
    = 12.0 / 0.02
    = 600
    ...im really not sure where to go from here. It seems like the only way to get electric force is by knowing the charge of the particle, but that info isnt given. Is there some way to get around this? :confused:
    any help is appreciated, thanks in advanceo:)
  2. jcsd
  3. Oct 2, 2011 #2


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    Staff: Mentor

    An alpha particle consists of two protons and two neutrons...
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