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bob19841984
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Homework Statement
A point charge of +8C is located at (-6,0)cm. A second point charge of -11C is located
at(-5,-12)cm. If a -5C charge were at the origin, how much energy is required to move it to innity?
Homework Equations
V=KQ/R
U = -qV
The Attempt at a Solution
I have the solution. It is given as below... I just don't understand why!
http://a-s.clayton.edu/jdyer/physics/phys1112/phys1112S09/Quizzes/1112_Quiz2_solution.pdf"
If the origin now has a -5 micro C charge, why is the energy potential still calculated as if it was not there? I have been banging my head on this for a while, any help would be greatly appreciated.
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