Three point charges with values q_1 = 4.00nC , q_2 = 3.00nC , and q_3 = 7.00nC a

Question

Three point charges with values q_1 = 4.00nC , q_2 = 3.00nC , and q_3 = 7.00nC are placed on three consecutive corners of a square whose side measures s = 3.00m . Point A lies at the fourth corner of the square, diagonally across from q_2. Point B lies at the center of the square. What are the values of the electric potential at point A and at point B? How much energy (supplied as work) is required to move a test charge q_4 = 2.00nC from point A to point B? Assume the zero of electric potential is chosen to be at infinity.

Which variables(s) will not be used in calculating the electric potential at points A and B?

Check all that apply.
Check all that apply.
q_1
q_2
q_3
q_4
s

Explanation / Answer

q4 is the answer

as potential at apoint which is at a distance r from a charge q ,V=Kq/r

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