Question

Rohan rubbed a plastic ruler to his hair and then took the ruler close to bits of paper. The bits of paper got attracted to the ruler. But when Suresh tried the same with a metal ruler, the bits of paper did not stick to the ruler. He was very confused. Can you explain why this happened?

Answer 1

Suresh must have been bald.
Suggest him to try the experiment when his hair has grown back.

Answer 2

Because of Static Electricity

defination of static electricity

a stationary electric charge, typically produced by friction, which causes sparks or crackling or the attraction of dust or hair