When a comb is rubbed with hair, it attracts paper bits. Choose t… - Vidyadip

MCQ

When a comb is rubbed with hair, it attracts paper bits. Choose the right explanation:

A
Bits of paper gets attracted due to gravitational force.
B
Due to electromagnetic effect, bits of paper are attracted.
✓
Comb gets charged by friction and attracts bits of paper.
D
None of these.

✓

Answer

Correct option: C.

Comb gets charged by friction and attracts bits of paper.

When comb is rubbed to hair, it induces negative charge due to friction. When it is brought close to paper bits, they get polarized and the positive part sticks to the comb due to electrostatic attraction.

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