Static electricity is generated when two materials are rubbed together, with one gaining electrons and becoming negatively charged and the other losing electrons and becoming positively charged, as determined by their ranking on the triboelectric series. The triboelectric series ranks materials based on their tendency to gain or lose electrons through friction, with materials higher on the list more likely to become positively charged when rubbed against those below. Car tires are made of conducting rubber to prevent a buildup of static electric charge while driving.

1. Static Electricity

7. Scientists have ranked materials in order of their ability to hold or give
up electrons. This ranking is called the triboelectric series. A list of some
common materials is shown here. Under ideal conditions, if two
materials are rubbed together, the one higher on the list should give up
electrons and become positively charged
TRIBOELECTRIC SERIES
your hand
glass
your hair
nylon
wool
fur
silk
paper
cotton
hard rubber
polyester
polyvinylchloride plastic

13. The –ve charge on the rod pushes the electrons to the bottom of the
foil, so the top has a relatively +ve charge.

16. Why are the tyres made from conducting
rubber?