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An inflated rubber balloon is rubbed with a woollen cloth whereas a ballpoint pen refill is rubbed with a polythene bag. Which of these will get positively charged? A) Inflated rubber balloon B) Woollen cloth C) Ballpoint pen refill D) Polythene bag A. A and B B. B and C C. A and D D. B and D |
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Answer» B. B and C A ballpoint pen refill can be charged by rubbing it against the wool cloth. It becomes negatively charged. |
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