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Homework Help: Moving a charge

  1. Apr 21, 2008 #1
    1. The problem statement, all variables and given/known data

    A point charge with charge q1 is held stationary at the origin. A second point charge with charge q2 moves from the point (x1, 0) to the point (x2,y2).

    How much work W is done by the electrostatic force on the moving point charge?

    Express answer in joules. Use k for Coulomb's constant

    2. Relevant equations

  2. jcsd
  3. Apr 21, 2008 #2
    Think about how you would define moving, say, a rock from one elevation to another. At each location, the rock has a certain "gravitational potential energy", and the amount of work you do is equal to the differences in the gravitational potential energies.

    Now think about how you define potential energies for charged particles.
  4. Apr 22, 2008 #3
    can any help me, i still dont get it
  5. Apr 22, 2008 #4
    What exactly don't you get?

    A good first step would be posting your attempt at solving the problem.
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