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Electric Fields and Point Charges

  1. Jun 29, 2009 #1
    1. The problem statement, all variables and given/known data

    Suppose you want to determine the electric field in a certain region of space. You have a small object of known charge, and in an instrument that measures magnitude and direction of the force exerted by object by the field.

    (a) The object has a charge of +20.0 C, and the electric force exerted on it is 40.0 N due east. What are the magnitude and direction of the electric field?

    (b) What are the magnitude and direction if it has a charge of -10.0 C and the force 20.0 N due west?

    2. Relevant equations

    E = F/q0

    3. The attempt at a solution

    (a) E = 40.0 N/20.0 C = 2.00 N/C due east

    (b) E = -20.0 N/-10.0 C = 2.00 N/C due east

    Are these the right magnitudes and directions?
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Jun 29, 2009 #2

    jgens

    User Avatar
    Gold Member

    Looks pretty good to me.
     
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