Gujarat BoardEnglish MediumSTD 8ScienceSome Natural Phenomena2 Marks
Question
Why does a plastic comb rubbed with dry hair attract tiny pieces of paper?
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Answer
The electric charges generated by rubbing are static electric charges. These electric charges remain bound on the surface of the charged object. When a plastic comb is dry hair, it becomes negatively charged. The negatively charged comb induces a positive charge on the pieces of paper which are neutral in nature. As we know that the unlike charges attract each other, plastic comb attracts tiny pieces of paper.
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