What is the reason behind the generation of static electricity by rubbing comb on hair?

Chemical reaction between hair and comb

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Induction between comb & hair

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Friction between comb & hair

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By a battery connected to comb

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Solution

The correct option is C
Friction between comb & hair

The charge developed here is static electricity. Static electricity is usually generated by friction.
In this case, the friction between hair & comb results to static electricity.

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