Electrification Experiments
Electrification (charging ) represents a phenomenon of charge transfer. There are three types of electrification of an object by:
Friction
Conduction
Influence
Electrification by Friction
We rub a plastic or glass ruler with wool and bring it close to the small pieces of paper, it attracts it. Without friction nothing happens, after friction the ruler will be electrified (charged). We say that there is a mechanical removal of electrons from a body
Electrification by Conduction
Contact electrification occurs on a neutral object when a charged object is in contact with it.
During conduction the same charge is created in a neutral object. Electrons will transfer from a negative object to a neutral object making it negative.
Charging By Conduction Facts :
Contact
Same charge
Permanent (with electron transfer)
ELECTRIFICATION BY INDUCTION ( INFLUENCE )
You can induce a charge in a neutral object by moving a charged object close to it.
Induction electrification or influence creates a temporary and opposite charge in that other object with no contact.
This is considered temporary because no electrons are transferred and neutrality returns when the close charged object is removed.
Charging By Induction Facts
No contact
Opposite charge
Temporary (no electron transfer)