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charge of electron
-1.60 × 10^-19 q
charge of proton
1.60 × 10^-19
Law of Conservation of Charge
During any process the net electrical charge of a closed system remains constant
Like charges _
repel
Unlike charges __
attract
Conductors of electricity
heat conductors , metals
Insulators poor conductors
rubber, plastic, wood
point charges __
exert force on each other related to size of the charges and distance between
Coloumbs law
F = k |q1q2|/r²
electric force
F - coloumbs
charges unit
C - coloumbs
test charge
to determine how surrounding charges generate a force - use small to not change orientation
Electric field
E = Fe/qo or kq/r²
unit for electric field
N/C or V/m
for electric field positive ___ negative ___
positive moved away from positive while negative moves toward
Electric field lines
map to show e field in space
Electric potential energy
change in PE due to gravity
Electric potential equation (voltage)
V = deltaPE/qo
for point charges V = kq/r
to add potentials from several point charges
add the potential at that point
equipotential lines
lines where the electric potential is the same
potential energy (PE)
qoV Unit - Joules
mass of proton
1.67E-27 kg
mass of electron
9.11E-31
