The following information is given about the insulating sphere and the conductive spherical shell in the figure: a = 5 cm, b = 20 cm, c = 25 cm. The electric field at a distance of 10 cm from the center is 3.6x10 ^3 N / C and radially inward. At a distance of 50 cm from the center, the electric field is 2.0x102 N /C radially outward. What is the charge on the insulating sphere nc? Insulator A) -5 C) -4 Conductive B) -3 D) -2 E) -1 9.
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