When rubbing a ruler with my hair and get it closer to some pieces of papers , it'll attract them (they'll effect each other by an electric force). But why ? WhenI only charge the ruler not both of them ( I mean the pieces of papers too)
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1you will get your answer here https://physics.stackexchange.com/questions/63557/why-does-the-comb-attract-the-pieces-of-papers-if-theyre-neutral – Bhavay May 24 '19 at 19:15
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Thank you so much – T.Tariq May 25 '19 at 01:22