ELECTROSTATICS

The physics of charged objects Study of electricity aims to understand the interaction between different charged objects. + -

The physics of charged objects Study of electricity aims to understand the interaction between different charged objects. + + - -

Structure of Matter - electrons neutral neutrons + protons Fundamental building blocks of the matter are atoms. - electrons - - - neutral neutrons - + + + + + + - + - + protons -

Structure of Matter Neutral atom – electron = Positive ion - - - - + +

Structure of Matter Fundamental building blocks of the matter are atoms. - - - - + + + + + + - + - -

Structure of Matter Neutral atom + electron = negative ion. - - - - +

ELECTRICALLY CHARGING OBJECTS + - + - + - - + - + - + + - + - + - neutral object

ELECTRICALLY CHARGING OBJECTS + - + - + - - + - + - + + - + - + - positive object

ELECTRICALLY CHARGING OBJECTS + - + - + - - - + - + - + + - + - + - negative object

Charging by Induction In metals outer atomic electrons are not bound to any atoms (electron see). + + + + + + + + + +

- Charging by Induction In metals outer atomic electrons are not bound to any atoms (electron see). + - + + + + + + + + +

Charging by Induction

Electric Polarization Same atoms have weakly bound electrons. - - + + - + + + + - + - - -

Electric Polarization Same atoms have weakly bound electrons. - - + + + - - + + + + + - - -

Electric Polarization

The Electric Force

Coulomb’s Law Quantifies the electric force between two charges.

Electric Force Field