# All Electrodynamics Formulas List

## Stored Energy with Potential Difference

#### Stored Energy with Potential Difference:

Stored Energy: Capacitance: Potential Difference: where,
U = Stored Energy,
C = Capacitance,
V = Potential Difference.

## Stored Energy with Electrical Charge

Stored Energy with Electrical Charge:
Stored Energy: Capacitance: Electrical Charge: where,
U = Stored Energy,
C = Capacitance,
Q = Electrical Charge.

## Energy Storage, Potential Difference and Electrical Charge

#### Energy Storage:

Energy Storage: Potential Difference: Electrical Charge: where,
U = Energy Storage,
V = Potential Difference,
Q = Electrical Charge.

## AC / DC Voltage Drop

#### Formula:

Voltage drop (Vd)=P*I*L*R/D

Where,

L=Cable length
R= Resistance factor of cable material
D= cross sectional area of conductor
P=2 for Single phase
1.732 for three phase

## Energy Consumption

#### Formula:

Electricity Unit = (30 x n x W x H) / 1000

Where,

W = Energy Consumption Unit (watts)
H = Time (hours)
n = Number of Appliances

## Molecular Diffusion Coefficient

#### Formula : Where,

C = concentration at z,
Co = initial concentration,
z = distance from the source,
p = porosity,
D = coefficient of molecular diffusion,
t = tortuosity,
t = time

## Sine Wave Angular Speed

Formula :
ω = 2 π f

Where ,

ω = Angular Speed
2π =2 x 3.14
f = Frequency

#### Related Calculator:

Sine Wave Angular Speed / Frequency calculation is made easier here using this online electrical calculator.

## Debye Number

#### Formula:

NDe = (4/3)*π*ne*(λDe)3

Where,

NDe = Debye Number
ne = Electron Number Density
λDe = Electron Debye Length

## Debye Screening

#### Formula:

Φ(r) = (q*exp(-21/2*(r/λDe))) / (4*π*εo*r)

Where,

Φ(r) = Debye Screening
q = Point Charge
r = Distance From q
λDe = Electron Debye Length
εo = Permittivity Of Vacuum

## Capacitance

#### Formula:

Power Dissipated in Capacitor = (V x V) / R

Where,

R = Resistance
V = Voltage