STATIC ELECTRICITY

Joseph John Thomson

• english physicist who helped revolutionize the knowledge of atomic structure by discovery of electron

Electric Charge

• fundamental property of matter that causes it to experience a force when placed in an electromagnetic field

• property of protons and electrons

• interact and produce electrical force

positive

more protons than electrons

negative 

more electrons than negative 

uncharged

• equal numbers of protons and electrons

ionization

• which an atom or molecule gains or loses electrons, turning it into ion 

attract

• opposite charges attract each other

• positive objects will attract negative

repel

• objects with the same charge repel each other

• 2 positive charged objects push apart , as do 2 negative

static electricity

• build up of electric charge on the surface of an object 

• stays in one place (static) rather than flowing like a current 

friction

• charging by rubbing different materials

conduction

• charging of neutral objects by contact with an already charged object 

induction

• charging of neutral objects without contact of other charged objects 

triboelectric charging

• certain materials become electrically charged after they come into contact with another material then separate 

charging by induction 

• process of transferring charge between objects without direct contact 

charging by conduction

• transferring electric charge between 2 objects by direct contact

grounding

• process of removing the excess charges on the object by means of transfer of electrons between it and another of substantial size 

electrostatic

• behavior of an object that has been charged is dependent upon whether the object is made of conductive and non conductive materials 

conductors

• materials permits electron to flow freely from particle to particle 

insulators

• materials impeded the free flow of electrons from atom to atom and molecules to molecules 

polarization

• redistribution of charges within an object in response to the presence of a nearby object 

electric force

• attraction or repulsion between 2 charged objects due to their electric charges 

Coulomb’s Law

• gives the electric force between two point charges