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Dimensions of Physical Quantity.
Dimensions of a physical quantity. In this video i explain about What dimensions of a physical quantity is and also you get to find dimensions of a physical quantity. Units Dimensions of Physical quantities in SI system. 96 rows This is a list of physical quantities.
SNo Fundamental Physical Quantity Formula Dimensional Formula SI Unit of physical quantity 1. Have to be raised to represent the quantity. The dimensional formula is a compound expression showing how and which of the fundamental quantities are involved in making that physical quantity.
Things in which quantity is measured are known as units. The unit of force is Newton. Definition of Dimensions of Physical Quantities The dimension of a physical quantity is defined as the powers to which the fundamental quantities are raised in order to represent that quantity.
The dimension of mass length and time are represented as M L and T respectively. Electric current I or A ampere 5. The dimension of physical quantitymay be definedas the number of times the fundamental units of mass lengthand time appear in the physical quantity.
Measurement of physical quantity Magnitude Unit Ex1 A physical quantity is measured and the result is expressed as nu where u is the unit used and n is the numerical value. Time T sec 4. The seven fundamental quantities are enclosed in square brackets to represent its dimensions.
It also enables you to k. Amount of substance N molemol. The power to which fundamental units are raised in order to obtain the unit of a physical quantity is called the dimensions of that physical quantity.