A physical quantity is a quantity that can be measured Length is an example of a physical quantity It can be measured with an instrument such as a metre rule. Other examples of physical quantities are time mass temperature and electric current
Physical quantities are not only important in scientific investigation bus also in our daily life especially in buying and selling.
Physical quantities are measured in SI units units is the abbreviation of the French term "Le Systeme International d'Uites" which means international system of Units They are used as standard units all over the world
The following table gives the physical quantites their SI units and the instruments used to measure them.