Physics Formulae for Beginners

Electrical energy in the home
E = F/q
E = electric field strength
F = force
q = charge
E = kq/r2
E = electric field strength
k = 9.00 x 109
q = charge
r = separation of charges
F = Eq
F = force
E = electric field strength
q = charge
R = V/I
R = resistance
V = potential drop
I = current
R = kl/A
R = resistance
k =
P = VI (P = V2/R or P = I2R)
P = Power
V = Voltage rise
I = Current
R = resistance
W = VIt
W = Energy
V = Voltage rise
I = current
t = time
Moving about
vav = Δr/ Δt
vav = average velocity
Δr = displacement (change in position)
Δt = time
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