(10 pts) (1) (a) Four point charges, two of value-Q and two of value +Q, are held in place on the corners of a square of side A, as shown in the figure below. -Q A 10: +Q +Q (i) Assuming V = 0 at infinity, find the electric potential at the center of the square. (ii) Find the electric field (both magnitude and direction) at the center of the square.
(10 pts) (1) (a) Four point charges, two of value-Q and two of value +Q, are held in place on the corners of a square of side A, as shown in the figure below. -Q A 10: +Q +Q (i) Assuming V = 0 at infinity, find the electric potential at the center of the square. (ii) Find the electric field (both magnitude and direction) at the center of the square.
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