Radiofrequency Radiation Dosimetry Handbook - Fourth Edition

Table 3.2. Some Derived SI Units

Quantity
Measurement Term
Name
Common Symbol
Name of Unit
Symbol for Unit
Expression in
Terms of Other
Units
Expression in Terms of SI Base Units
capacitance C farad
F
C/V m-2 · kg-1 · s4 · A2
charge q coulomb
C
A · s s · A
conductance G siemens
S
-1 or A/V m-2 · kg-1 · s3 · A2
conductivity siemens per meter
S/m
-1 · m-1 m-3 · kg-1 · s3 ·A2
current density J ampere per square meter
A/m-2
m-2 · A
electric-field intensity E volts per meter
V/m
m · kg · s-3 · A-1
electric-flux density (displacement) D coulomb per square meter
C/m2
m-2 · s · A
energy W joule
J
N · m m2 · kg · s-2
energy-flux density (power density) S watt per square meter
W/m2
J · s-1 · m-2 kg · s-3
frequency f hertz
Hz
s-1
impedance Z ohm
V/A m2 ·kg · s-3 ·A-2
inductance L henry
H
Wb/A m2 · kg · s-2 · A-2
magnetic-field intensityH ampere per meter
A/m
m-1 · A
magnetic-flux density B tesla
T
Wb/m2 kg · S-2 · A-1
permeability µ henry per meter
H/m
m · kg · s-2 · A-2
permittivity farad per meter
F/m
m-3 · kg-1 · s4 · A2
power P watt
W
J/s m2 · kg · s-3
reactance X ohm
V/A m2 · kg · s-3 · A-2
resistance R ohm
V/A m2 · kg · s-3 · A-2
resistivity ohm meters
m
m3 · kg · s-3 · A-2
voltage (potential difference) V volt
V
W/A m2 · kg · s-3 · A-1