Question

Differentiate between fundamental unit and derived unit.​

Answer 1

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Fundamental Unit

• Fundamental units are all those units which are independent of any other unit (including themselves).

• Fundamental units cannot be further reduced to elementary level; in fact, these are elementary units.

• Fundamental units cannot be expressed in terms of derived units. Derived units can be expressed in terms of fundamental units.

• Only seven fundamental units exist in Metric System or SI system. There exist a large number of derived units in Metric System.

Derived Unit

• Derived units are all those units which are obtained by multiplying and/or dividing one or more fundamental units with or without introducing any other numerical factor.

• Derived units can be reduced to its elementary level, which are composed of fundamental units.

• Derived units can be expressed in terms of fundamental units.

• There exist a large number of derived units in Metric System.