Electricity (2)

Variable

Description

 

 

r

Relative permittivity

r

Relative permeability

ωAngular frequency

ω0

Resonant angular frequency

φPhase angle

φp,φs

Parallel and series phase angles

ρResistivity

ΔI

Current change

Δt

Time change

ΔV

Voltage change

AWire 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

dPlate separation

EEnergy

FForce between charges

fFrequency

f0

Resonant frequency

ICurrent, or Total current (Current Divider)

I1

Current in R1

Imax

Maximum current

LInductance, or Length (Wire Resistance, Cylindrical Capacitor)

L1,L2 Inductance

Lp,Ls

Parallel and series inductances

NNumber of turns

nNumber of turns per unit length

PPower

qCharge

q1,q2

Point charge

Equation Reference 5-9