Principle

The pupils see that two isolators, made of different materials, are differenly charged when rubbed. They are able to determine the type of charge with a neon tube or an "electrical balance". They trace back the charging up to a seperation of charge.

Benefits


Quick and easy experiment for qualitatively understanding of electrostatic phenomena


Tasks

How are fims and plates charged? To investigate using a neon tube and an "electrical balance" how a polycarbonate plate and acetate film are charged by rubbing with paper and by mutual contact.