When cotton and rubber are rubbed together, the rubber becomes positively charged and the cotton becomes negatively charged due to the transfer of electrons, a phenomenon known as triboelectric charging.
When cotton and rubber are rubbed together, there is a transfer of electrons due to the triboelectric effect.
Cotton tends to lose electrons and become positively charged.
Rubber tends to gain electrons and become negatively charged.
This phenomenon occurs because different materials have different affinities for electrons.
The triboelectric series is used to predict which material will become positive and which will become negative when rubbed together.