vector: magnitude, direction, components (resultant) ^{
+ forces represents forces whose direction in the same direction as the field
line
}

N

V_{abs} = kQ/r

scalar: magnitude only
^{+ equipotential surfaces surround positive charges}

J/C

EPE = qΔV_{abs}

scalar: magnitude only
^{+ EPE signifies that the charge has gained electric potential energy}

J

EPE_{sys} = Σk (q_{i}q_{j} / r_{ij})

scalar: magnitude only
Remember that this is the SUM OF THE POTENTIAL ENERGY OF EACH PAIR of charges

J

W_{done by external agent }= qΔV

scalar: magnitude only
Remember that the absolute potential at infinity is defined to be zero.

J

W_{done by field }= -ΔEPE

scalar: magnitude only
Remember that + charges move to points of lower electric potential when moved along
electric field lines, therefore they lose EPE. Consequently, when the field
does positive work on a charge, (W = Fs cos θ where
θ = 0º) the charge loses EPE and gains KE

J

previous material:
kinematics equations
(accelerated motion)
R = v_{H}t
net F = ma
W = Fs cos θ
KE = ½ mv^{2}
conservation of energy

Remember to use H | V charts when analyzing 2-dimensional motion
Remember your graph shapes for s vs t and
v vs t Remember that projectiles have a parabolic trajectory when they experience
accelerated motion in one dimension and constant velocity in another

General Information

charging methods:(basic electrostatics)
by conduction: temporary vs residual charges
charging by induction: temporary vs residual charges
electrification by friction
positively charged: loss of electrons (|e| = 1.6 x 10^{-19} C)
inverse square relationships (Coulmb's force and E fields for point charges)
inverse relationships (voltage for point charges)
charges flow from one location to another because of a difference in potential
charge configurations comparing net E and net V at a common point
radial electric fields (point charges)
direction of field lines: positive charge, negative charge, similar charges, unlike charges
uniform electric fields (parallel plates)
battery notation: long line positive, short line negative
field strength: density of field lines or closeness of equipotential surfaces
conductor vs insulator
Faraday's Ice Pail Experiment
conducting shells