1. When a piece of cellulose acetate (transparency) is rubbed by stroking it for about 10 to 20 times in one direction and brought towards a piece of rubbed polythene strip, i. state what happens, and ii. explain the observation. 2. Before rubbing a polythene strip with a soft cloth, both the strip and the cloth are neutral. After rubbing, the polythene strip is charged negatively. a. Does a neutral body possess any charge? Explain. b. Is the soft cloth charged after rubbing? If it is, is it charged positively or negatively? c. How do you discharge an insulator like a polythene strip? Thanks in advance.