Ahard rubber rod is rubbed with wool and thus gains an approximately uniform net negative charge. the rubber rod is then suspended from a plastic string. a neutral (net charge zero) copper rod is also suspended from a plastic string and brought near the rubber rod. the rods never touch, and no spark jumps between the rods. the rubber rod and the plastic string are insulators (i. e., charge is not free to move through them). the copper rod is a conductor (i. e., charge is free to move through it).

which of the following best represents the charge distribution on the acrylic rod after the rubber rod is moved far away from the acrylic rod? 1) no charge 2) positive charge at the end it was rubbed on 3)negative charge at the end it was rubbed on 4) positive charge throughout 5) negative charge throughout 6) negative at one end and positive at the other is the net charge on the acrylic rod positive, negative, or zero? when the rubber rod was scraped, the net charge on the rubber rod changed or remained the same?