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Homework Statement
Which one of the following statements best explains why it is possible to define an electrostatic potential in a region of space that contains an electrostatic field?
A) Work must be done to bring two positive charges closer together.
B) Like charges repel one another and unlike charges attract one another.
C) A positive charge will gain kinetic energy as it approaches a negative charge.
D) The work required to bring two charges together is independent of the path taken.
E) A negative charge will gain kinetic energy as it moves away from another negative charge.
Homework Equations
The Attempt at a Solution
I Thought it would be 'Like charges repel one another and unlike charges attract one another' because in our textbook it states 'In this drawing a positive test charge +q, is situated at Point A between two oppositely charged plates. Because of the charges on the plates, an electric Field E exists in the region between two plates'. But that answer was wrong.
The correct answer is D but I completely do not understand! Can someone explain it to me please!