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Acomb runs through one's dry hair and at...

Acomb runs through one's dry hair and attracts small bits of paper. Why ? What happens if the hair is wet or it is a rainy day ?

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We have seen that bits of paper got attracted to a plastic comb which had got charged by rubbing it against dry hair, explain why it happen?

PATHFINDER-ELECTROSTATICS-I, II AND III-QUESTION BANK
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