Rev. Notes > AS > Physical quantities and units Previous Topic Physical quantities and units Next Topic Topics
 Physics Areas of Physics Interdisciplanary areas of physics Quantities in Physics Base Units Convention for indicating units Derived Units S.I. Units (International System of Units) Supplementary units Homogeneity of equations Significant figures Rules of Significant figures Further discussion on Significant figures Dimensions Scientific notation The Avogadro's Constant Scalars and Vectors Addition and subtraction of co-planar vectors Rectangular components of a vector

## Base Units

There are seven base units for various physical quantities namely: length, mass time, temperature, electric current luminous intensity and amount of substance (with special reference to the number of particles).

 Quantity Unit Symbol of unit Mass kilogram kg Distance metre m Time second s Electric Current ampere A Thermodynamic temperature Kelvin K Quantity of substance mole mol Luminous intensity candela cd

Note:

First five base units mass, distance, time, electric current and thermodunamic temperature are teh parts of AS physics, while the remaining two base units are included in A2 (second year of A Level)

 Student Said : Super i got so much of information through physicsatweb.com 11/07/15 09:09 AM

 Kennyworthy Mphande Said : nicely explained. 26/01/15 07:00 PM

 benard wilson Said : very good notes and easy to understand. i wish u can make more of dem 10/09/14 09:57 PM