2.20 describe experiments to investigate how insulating materials can be charged by friction

2.20 describe experiments to investigate how insulating materials can be charged by friction

Experiment: To investigate how insulating materials can be charged by friction

Apparatus: Glass rod, silk cloth, electroscope

Procedure:

1. Take a glass rod and silk cloth.
2. Rub the rod with the cloth.
3. Now, take any of the two materials near the metal plate of an electroscope.

Observation:

1. You will notice that the leaf below will deflect.
2. This will prove that charge can be produced by friction.