Positively charged
Electrons are removed making the object electron deficient
Negatively charged
Electrons are added giving the object an excess of electrons
Electrostatic force
The force exerted by the static charges on each other
The electrostatic for between:
The principle of conservation of charge
The net charge of an isolated system remains constant during any physical process
Elementary charge
The amount of charge carried by one electron
Q
Charge
N
Number of electrons
E
Charge in one electron (1.6 x 10^-19