5 Questions
Which SI unit is defined by the caesium frequency?
Second (s)
What is the SI unit of length?
Metre (m)
What is the SI unit of mass?
Kilogram (kg)
Which SI unit is defined by the Boltzmann constant?
Kelvin (K)
What is the SI unit of electric current?
Ampere (A)
Test your knowledge of SI base units with this quiz. Challenge yourself to recall the definitions and symbols of units such as the metre and kilogram.
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