Differentiate between fundamental quantities and derived quantities
Differences between fundamental quantities and derived quantities
Fundamental quantities vs derived quantities.
Independent quantities vs dependent quantities.
Base quantities vs derived quantities.
Base quantities, fundamental quantities and independent quantities terms are used interchangeably.
While
Derived quantities and dependent quantities terms are used interchangeably.
While
Derived quantities and dependent quantities terms are used interchangeably.
The differences between fundamental and derived quantities are as follows:-
Fundamental quantities | Derived quantities |
---|---|
Those physical quantities which are independent of other quantities are called fundamental or independent quantities. | Those physical quantities which dependen upon fundamental quantities for their expression in mathematical form are called derived or dependent quantities. |
There are 7 fundamental quantities. |
There are numerous derived quantities.
Its hard to figure out exact number of derived quantities. |
Fundamental quantities are elementary quantities so they can not be further broken down to other quantities. | Derived quantities are composite quantities so it can be broken down in terms of fundamental quantities. |
All fundamental quantities have a unit associated with it. |
Some derived quantities are unitless as they are ratio of same physical quantities.
For example angle between two lines, efficiency, etc. |
Examples
Length, mass, time, amount of substance, temperature, luminous intensity and electric current. |
Examples
Speed, Frequency, plain angle, solid angle, force, pressure, energy, work, power, electric voltage, magnetic flux density, etc |
Examples of SI units associated with fundamental quantities :-
meter, kilogram, second, mole, kelvin, candela and current. |
Examples of SI units associated with derived quantities :-
meter per second(m/s), hertx(Hz), degree, newton(N), pascal(Pa), joule(J), watt(W), voltage(V), tesla(T), etc. |
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