can you please tell how do pvc rod and glass rod get opposite charges,do`nt they have same charges ?Also tell why electrons get transferred on rubbing?
If an atom has more electrons than protons, it is negatively charged. If an atom has more protons than electrons, then it is positively charged. If a material is more likely to capture electrons when in contact with another material, it is more negative.
Probably, you can find materials below that produce static electricity by rubbing.
The human body is positive. Fur, glass, nylon, wool, silk, and cotton, are considered to have a positive charge. Materials such as polyurethane, saran, styrene (Styrofoam), polyester, PVC, and Teflon, are negatively charged.