Eight point charges, each of magnitude q, are located on the corners of a cube of edge s, as shown in Fig. 3 (i) Determine the x, y, and z components of the resultant force exerted by the other charges on the charge located at point A. (ii) What are the magnitude and direction of this resultant force? (iii) Show that the magnitude of the electric field at the center of any face of the cube has a value of 2.18 1 4π0 q s 2 . (iv) What is the direction of the electric field at the center of the top face of the cube?
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