Question: Point charges q 1 = +2.00 C and q 2 = -2.00 C are placed at adjacent corners of a square for which the length

Point charges q₁ = +2.00 µC and q₂ = -2.00 µC are placed at adjacent corners of a square for which the length of each side is 3.00 cm. Point a is at the center of the square, and point b is at the empty corner closest to q₂. Take the electric potential to be zero at a distance far from both charges.

(a) What is the electric potential at point a due to q₁ and q₂?

(b) What is the electric potential at point b?

(c) A point charge q₃ = -5.00 µC moves from point a to point b. How much work is done on q₃ by the electric forces exerted by q₁ and q₂? Is this work positive or negative?

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