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Homework Help: Electrical field of a charge

  1. Oct 24, 2009 #1
    1. The problem statement, all variables and given/known data
    A 4C charge experiences 45i of force. What is the electric field at the charge?

    2. Relevant equations
    F=qE --> E=F/q

    3. The attempt at a solution
    F=45i 0j

    I don't really know how to find the actual force from this component without an angle or anything.

    E=45/4 = 11.25.. this is the wrong answer
  2. jcsd
  3. Oct 24, 2009 #2


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    Homework Helper

    It looks right to me. What does the "i" mean in "45i"? If it means the x direction, then you may need an "i" on the 11.25, too.
  4. Oct 24, 2009 #3
    i is the x-component and for some reason the answer is 14i N/C, but i dont know why
  5. Oct 24, 2009 #4


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    Homework Helper

    Check the 4 C and the 45 N; if they are correct then your answer is correct and the 14 is wrong. It should be reported to whoever marks your work.
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