CMS SI Units & Prefixes 1

Question 1

Which SI prefix represents 10⁻⁹?

Accepted Answer

nano

Answer

The prefix nano represents 10⁻⁹, commonly used in nanotechnology and nanometers.

Question 2

The SI unit of electric current is:

Accepted Answer

Ampere

Answer

The ampere (A) is the SI base unit for electric current.

Question 3

What is the SI unit for luminous intensity?

Accepted Answer

Candela

Answer

The candela (cd) is the SI base unit of luminous intensity.

Question 4

How many base units are defined in the International System of Units (SI)?

Accepted Answer

7

Answer

The SI system defines exactly 7 base units from which all other units are derived.

Question 5

Which prefix denotes a factor of 10¹²?

Accepted Answer

Tera

Answer

Tera (T) represents 10¹², as in terabytes in computer storage.

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