An electric field is E= (400 N/C)i for x > 0 and E= (–400N/C)i for x < 0. A cylinder of length 30 cm and radius 10 cm has its center at the origin and its axis along the x axis such that oneend is at x = +15 cm and the other is at x = –15 cm. What is the net charge inside the cylinder?
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