derived unit
A unit that is defined by simple combination of base units . There are 18 derived units in the SI system . These are listed in the table below.
Derived SI units with special names
Physical quantity
Name of unit
Symbol
frequency
hertz
Hz
energy
joule
J
force
newton
N
power
watt
W
pressure
pascal
Pa
electric charge
coulomb
C
electrical resistance
ohm
Ω
electrical conductance
siemens
S
electrical capacitance
farad
F
magnetic flux
weber
Wb
inductance
henry
H
magnetic flux density
tesla
T
luminous flux
lumen
lm
illuminance
lux
lx
absorbed dose
gray
Gy
activity
becquerel
Bq
equivalent dose
sievert
Sv
Related category
• UNITS
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