why should hair be dry during the comb experiment?

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Solution

Hair should be dry during the comb experiment because of more charge accumulation on the comb.
More charge accumulation on the comb that means more electrostatic interaction between comb and tiny papers.

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why should hair be dry during the comb experiment?

Hair should be dry during the comb experiment because of more charge accumulation on the comb.More charge accumulation on the comb that means more electrostatic interaction between comb and tiny papers.

Hair should be dry during the comb experiment because of more charge accumulation on the comb.
More charge accumulation on the comb that means more electrostatic interaction between comb and tiny papers.