Electric force
Force between objects with charge.
Electrostatics
The study of electric charge at rest
Types of electric charges
positive (protons) & negative (electrons)
Negatively Charged
Object with excess of electrons
Positively Charged
Object with too few electrons (or too many protons).
Neutral
Objects with same number of electrons and protons.
Like charges ... while opposite charges ...
Like - repel ... opposite - attract
Coulomb
SI unit of charge = to the charge of 6.24 X 10^18 electrons
Conductor
Material that allows charges to move freely
Insulator
Material that does not allow charges to move
Factors Electrical force depends on
Size of charge and distance between charges
Coulomb's Law
k (constant) =
9 x 10^9 N m^2/c^2
q =
charges (C)
F =
force (N)
r^2 =
Distance (m)
What happens when distance increases?
Force descreases
What happens when the charge increased?
Force increases