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Important SI base units and SI derived Units – Physics

7 SI Base Units

Base QuantityUnitSymbol
TimeSeconds
LengthMeterm
MassKilogramkg
Electric CurrentAmpereA
TemperatureKelvinK
Amount of SubstanceMolemol
CandelaLuminous
Intensity
cd

Important SI Derived Units

QuantityUnitSymbol
AreaSquare Meterm2
VolumeCubic Meterm3
Speed or VelocityMeter Per
Second
m/s
AccelerationMeter Per
Second Square
m/s2
Angular VelocityRadian Per
Second
rad/s
FrequencyHertzHz
ForceNewtonN
PressurePascalPa
Work or EnergyJoule or
Newton meter
J or Nm
PowerWattW
Electric ChargeCoulombC
Potential Difference
Electromotive Force(emf)
VoltV
Electric Field StrengthVolt Per MeterV/m
Electric ResistanceOhm or
Volt/Ampere
Ω or V/A
CapacitanceFaradF
Magnetic FluxWeberWb
InductanceHenryH
Magnetic Flux DensityTeslaT
Magnetic Field StrengthAmpere Per
Meter
A/m
EntropyJoule Per KelvinJ/K
Specific HeatJoule Per
Kilogram Kelvin
J/(Kg. K)
Thermal ConductivityWatt Per
Meter Kelvin
W/(m.K)
Plane AngleRadianrad
Solid Angle Steradiansr

Unit Prefix in the Metric System

PrefixMultiplier
tera 1012
giga 109
mega 106
kilo 103
hecto 102
deca 10
deci 10-1
centi 10-2
mili 10-3
micro 10-6
nano 10-9
pico 10-12

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