Looks like no one added any tags here yet for you.
There are two kinds of electric charge.
like charges repel ; unlike charges attract
Electric charge is quantized.
That is, when an object is charged, its charge is always a multiple of a fundamental unit of charge.
Charge measurement
C ; Coulumb
F
Electrostatic force
Q or q1
First particle
q or q2
Second particle
K - constant
9Ć10^9
electrical conductor
material in which charges can move freely.
electrical insulator
material in which charges cannot move freely.
Insulators and conductors
can be charged by contact
induction
process of charging a conductor by bringing it near another charged object and grounding the conductor.
A surface charge can be induced on insulators by polarization.
With polarization, the charges within individual molecules are realigned such that the molecule has a slight charge separation.
Inverse Squared Law
For every distance (r) from the source (S), intensity decreases by r2
Universal Law of Gravitation:
any two bodies in the universe attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
1C
charge of 6.25 x 10^18 protons
Conductors in Electrostatic Equilibrium
ļThe electric field is zero everywhere
inside the conductor.
ļ Any excess charge on an isolated conductor
resides entirely on the conductorās outer
surface.
ļ The electric field just outside a charged
conductor is perpendicular to the conductorās
surface.
ļ On an irregularly shaped conductor, charge tends
to accumulate where the radius of curvature of
the surface is smallest, that is, at sharp points.
When solving for triangle electrostatic force problems
Step 1: Find A-b, A-C, B-C ising coulumbās law and state whether itās repulsive or attractive
Step 2: find the net force by using the direction each force is going in so it would be ā(force 1)Ā²+(force 2)Ā²
Step 3: Find the angle by using tan-1 |y force/x force| = wtv degree and state whether it is below or above (-)x
capacitor
is a device that is used to
store electrical potential energy.
Capacitance
is the ability of a conductor to store energy in the form of electrically separated charges
Farad (F)
SI unit for capacitance which equal a coloumb per volt