Question

Which is not a basic quantity ?​

Answer 1

Answer:

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Length, Mass and Time are the fundamental quantities in mechanics. Charge is not a fundamental quantity but Current is the base quantity for electrodynamics.

Explanation:

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Answer 2

The complete question is:

Which of the following is not a basic quantity?

(a) Length

(b) Force

(c) Time

(d) Amount of substance

Answer:

Force is not a basic quantity.

• Physical quantities can be defined as the properties of a substance that can be measured on a suitable scale.
• There are 7 fundamental physical quantities in physics, namely, length, mass, time, electric current, temperature, amount of substance, and luminous intensity.
• All other units are derived from these fundamental units and are called derived units.  
• So, force is a derived unit.