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Electric fields

  1. Jul 26, 2015 #1
    1. The problem statement, all variables and given/known data

    Point P is collinear with a +2.80 μC charged particle and a -8.50 μC charged particle as shown in the diagram below. Point P is 10 cm to the left of the positive charge and 20 cm to the left of the negative charge. What is the electric field at point P?

    p--------(2.80uc)---------(-8.50uc)
    2. Relevant equations
    e=kq/r^2

    3. The attempt at a solution
    i found the e field from p to the positive charge and p to the negative charge should i add them to find the total e field at point p?
     
  2. jcsd
  3. Jul 26, 2015 #2
    Yes you just need to add the field due to the two charges; but remember that the E field is a vector!!
     
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