The system is maintained by the International Bureau of Weights and Measures<\/a> in Paris, and is updated every few years.<\/p>\n
\u00a0Quantity<\/strong><\/td>\n| \u00a0Unit<\/strong><\/td>\n | \u00a0Symbol<\/strong><\/td>\n<\/tr>\n | \u00a0Length<\/td>\n | \u00a0meter<\/td>\n | \u00a0m<\/td>\n<\/tr>\n | \u00a0Mass<\/td>\n | \u00a0kilogram<\/td>\n | \u00a0kg<\/td>\n<\/tr>\n | \u00a0Time<\/td>\n | \u00a0second<\/td>\n | \u00a0s<\/td>\n<\/tr>\n | \u00a0Electric Current<\/td>\n | \u00a0ampere<\/td>\n | \u00a0A<\/td>\n<\/tr>\n | \u00a0Temperature<\/td>\n | \u00a0kelvin<\/td>\n | \u00a0K<\/td>\n<\/tr>\n | \u00a0Amount of substance<\/td>\n | \u00a0mole<\/td>\n | \u00a0mol<\/td>\n<\/tr>\n | \u00a0Luminous intensity<\/td>\n | \u00a0candela<\/td>\n | \u00a0cd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n | SI<\/strong> consists of base units which are absolute and independent of each other.<\/p>\n The base units are consistent with the metric system (referred to as the MKS<\/strong> system), with the acronym indicating the first letters of the symbols associated with the units of measurement of length, mass and time.<\/p>\n The physical quantities, associated SI<\/strong> units and symbols are illustrated in the adjoining table.<\/p>\n In addition to the base units, there are two types of units derived from the base ones, those with and without special names associated with them.<\/p>\n The derived units and the relationship between them can be found here<\/a>.<\/p>\n Specific prefixes are associated with different factors corresponding to the factor of the SI<\/strong> unit, like kilo for thousand, mega for million and giga corresponding to billion.<\/p>\n The kilogram is the only SI<\/strong> unit which has the prefix built into the unit.<\/p>\n |
![](\"https:\/\/uat-wordpress.enago.com\/academy\/wp-content\/plugins\/pdf-generator-for-wp\/admin\/src\/images\/PDF_Tray.svg\" "\\"Generate")
<\/a>\n\t\t<\/div>","protected":false},"excerpt":{"rendered":"