In the following which is a fundamental physical quantity?
- AForce
- BVelocity
- CElectric current
- DWork
- ENone of the above/More than one of the above
Show answer and explanation
Correct answer: (c) Electric current
Explanation
Electric current is one of the seven fundamental (base) quantities of the SI system: length, mass, time, electric current, temperature, amount of substance and luminous intensity.
Force, velocity and work are derived quantities, built from the base ones (for example, force = mass × acceleration).