Gravity 
Electricity 
Quantity 
Relationship 
Unit 
Note 
Quantity 
Relationship 
Unit 
Note 
Mass 
m 
kg 

Charge 
q 
C = A.s 

Density 
ρ = m/V 
kg/m3 

Volumetric density of charge 
ρ = q/V 
C/m3 


Current 
I = m/t 
kg/s 
I=konst (v potrubí) 
Current 
I = q/t 
C/s = A 
I=konst (Kirchhoff's current law) 
Current density 
j = I/s 
kg/(m2.s) 

Current density 
j = I/s 
C/(m2.s) = A/m2 


Potential 
V = ϰ_{G}*m/r 
m2/s2 

Potential 
V = ϰ_{E}*q/r 
kg.m2/(A.s3) 

Intensity of the grav.field 
E = ϰ_{G}*m/r^{2} 
m/s2 

Intensity of the el.field 
E = ϰ_{E}*q/r^{2} 
V/m 


Voltage 
U = ΔV 
m2/s2 

Voltage 
U = ΔV 
V 

Potential energy 
ΔW = U.m 
J = kg*m2/s2 

Energy of el.current 
ΔW = U.q = U.I.t 
J = V.A.s = kg*m2/s2 

Output 
P = ΔW/t 
J/s = kg*m2/s3 

Output 
P = ΔW/t = U.I 
V.A 


Grav.induction 
D = m/r^{2} 
kg/m2 

El.induction 
D = q/r^{2} 
C/m2 = As/m2 

Induction flux 
φ = U.t = gh.t 
m2/s 

Induction flux 
φ = U.t 
V.s = Weber = Tesla/m2 


Output of hydro turbine 
P = m/t(v1^{2}v2^{2}) = I*Δ(v^{2}) 
(kg/s)*m2/s2 

Battery output (performance) 
P = W/t = U.I 
V.A = (C/S)*V 

Current in conduit of variable crosssection 
I = m/t = ρ.V/t = ρ.S.v 
kg/s 

Electric current 
I = q/t = ρ.V/t = ρ.S.v 
C/s = A 

Resistance 
R = U/I = ght/m 
m2/(kg.s) 

Resistance 
R = U/I 
V/A = Ω 

Resistivity 
γ 
m3/(kg.s) 

Resistivity (1m,φ1mm2) 
γ 
Ω.m 

Resistance of wire 
R = γ*l/S 
m2/(kg.s) 

Resistance of wire 
R = γ*l/S 
Ω 

Resistance of conduit 
R = U/I = γ*Δh/S 
m2/(kg.s) 

El. resistance 
R = γ*l/S 
Ω 

Intensity (?) 
H 
kg/(s.m) 

Intensity of mg.field 
H 
A/m 

Permeability 
μ 
m/kg 

Permeability 
μ 
V.s/(A.m) 

Induction (?) 
B = μ.H 
1/s 

Magnetic induction 
B = μ.H 
kg/(s2.A) = Tesla 

