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Homework Help: 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?

    2. Relevant equations

    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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