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UNITS AND DIMENSIONS
Each base quantity is defined in terms of a certain basic, arbitrarily chosen but properly standardized reference standard called unit (such as metre, kilogram, second, ampere, kelvin, mole and candela). The units for the fundamental or base quantities are called fundamental or base units. The International System of Units (SI) based on seven base units is at present internationally accepted unit system and is widely used throughout the world.
Here is a table depicting different quantities with units, symbol and dimensional formula:
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