Measurement Units

The following table illustrates the major measuring units in physics −

Mass And Related Quantities
Quantity	Symbol	Unit
Density	ρ	kg.m^-3
Volume	V	m^-3
Force	F	Newton (N)
Torque	M	N.m
Pressure	P	Pascal (Pa)
Dynamic viscosity	η	Pa.s
Acoustic pressure	p	Pascal (pa)
Dynamic volume	v	m³
Electricity and Magnetism
Quantity	Symbol	Unit
Power	P	watt (W = J/s)
Energy	W	joule (J = N.m)
Magnetic field strength	H	ampère per metre (A/m)
Electric field	E	volt per metre (V/m)
quantity of electricity	Q	coulomb (C = A.s)
Electrical resistance	R	ohm (Ω = V/A)
electrical capacitance	C	farad (F = C/V)
Potential difference	U	volt (V = W/A)
International System of Units
meter	m	Length
kilogram	kg	Mass
second	s	Time
ampere	A	Electric Current
kelvin	K	Thermodynamic temperature
mole	mol	Amount of substance
candela	cd	Luminous intensity
radian	rad	Angle
steradian	sr	Solid Angle
hertz	Hz	Frequency
newton	N	Force, weight
pascal	Pa	pressure, stress
joule	J	energy, work, heat
watt	W	Power, radiant, flux
coulomb	C	Electric charge
volt	V	Voltage, electromotive force
farad	F	Electric capacitance
ohm	Ω	Electric resistance
tesla	T	Magnetic flux density
degree Celsius	⁰C	Temperature
becquerel	Bq	radioactivity
henry	H	Magnetic induction
Angstrom	Å	Wave length

Conversion of Units