HP 48GII

Equation Reference 5-9
Electricity (2)
Variable
Description
∈ r
Relative
p
ermi
t
tivit
y
µ r
Relative
p
ermeabilit
y
ω
An
g
ular fre
q
uenc
y
ω0
Resonant an
g
ular fre
q
uenc
y
φ
Phase an
g
le
φ p, φ s
Parallel and series
p
hase an
g
les
ρ
Resistivit
y
∆I
Current chan
g
e
∆t
Time chan
g
e
∆V
Volta
g
e chan
g
e
A
Wire cross-section area (Wire Resistance), or Solenoid cross-section
area (Solenoid Inductance), or Plate area (Plate Capacitor)
C, C1, C2
Capacitance
Cp,Cs
Parallel and series capacitances
d
Plate separation
E
Energy
F
Force between charges
f
Frequency
f0
Resonant frequency
I
Current, or Total current (Current Divider)
I1
Current in R1
Imax
Maximum current
L
Inductance, or Length (Wire Resistance, Cylindrical Capacitor)
L1,L2
Inductance
Lp,Ls
Parallel and series inductances
N
Number of turns
n
Number of turns per unit length
P
Power
q
Charge
q1,q2
Point charge