Base Units

Physical Quantities	SI Unit	Symbol
Length	meter	m
Mass	kilogram	kg
Time	second	s
electric current	ampere	A
Thermodynamic temperature	kelvin	K
Intensity of light	candela	cd
Amount of substance	mole	mol

Physical Quantities, Base and Derived Quantities

Physical Quantities:-

All those quantities in term of which laws of physics can be described and whose measurement is necessary to understand and problem, are call end physical quantities.

CATEGORIES OR TYPES OF Physical Quantities:-

Base Quantities:-

 Base quantities are those quantities which cannot be defined in term of other physical quantities.

Examples:-

• Length
• Mass
• Time

Derived Quantities:-

 Derived Quantities are those whose definitions are expressed in term of other physical quantities (Base Quantities)

Examples:-

• Velocity
• Acceleration
• Force