Question

A glass rod is rubbed with silk. In which direction, the electrons will move? What kind of charge is developed on glass and silk?

Answer 1

1. Glass when rubbed with silk, acquire a positive charge because glass has higher frictional order than silk.
2. Glass rode has a greater frictional factor as compared to silk, so it will acquire a positive charge and silk will acquire a negative charge.
3. When an atom gains electrons, i.e., a number of electrons in an atom is greater than the number of protons, it develops a negative charge.
4. When an atom loses electrons, i.e., when the number of electrons in an atom is less than the number of protons, it develops a positive charge.
5. So the flow of electrons will take place from glass rode to silk.