Question #76561

2 Answers
Nov 10, 2017

The glass rod will become positive

Explanation:

Silk is lower on a table called the Triboelectric series and glass is higher. That means that glass is very 'willing' to lose electrons, thereby becoming positive. The silk will accept those lost electrons thereby becoming negative.

Nov 10, 2017

The term is "Static electricity".

Explanation:

The glass rod acquires the "positive" charge, and the silk cloth retains the "negative" charge.

Some atoms hold on to their electrons more tightly than others do. How strongly matter holds on to its electrons determines its place in the triboelectric series. If a material is more apt to give up electrons when in contact with another material, it is more positive in the triboelectric series. If a material is more apt to "capture" electrons when in contact with another material, it is more negative in the triboelectric series.

Additional list here:
https://science.howstuffworks.com/transport/engines-equipment/vdg1.htm