Question

why does a rubbed comb attracts the bits of paper​

Answer 1

Answer:

electrostatic forces

Explanation:

The paper is initially attracted to the comb because the comb causes separation of charge in the paper. The part of the paper pieces with positive charge is attracted to the comb. When the paper touches the comb, some of the excess negative charge in the comb is transferred to the paper.

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Answer 2

Explanation:

It is the friction that causes the bits of paper to stick to the ruler.

Try an experiment:

Rub a balloon on your hair and the try and get the bits ofr paper to stick