The potential at point Ais the sum of potentials due to each charge.
Given that there are many charge sources, the electric potential at a point is the sum of the potentials due to each charge.
Electric potential energy:
Let's consider the labeled diagram below:
The potential at point A due to the charge is:
V = kqB/rAB + kqc/rAC + kqD/rAD
a. What is the electric potential at point A in the figure above?
b. What is the potential energy of a proton at point A?
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