Source: Extra Practice

Which of the following is not a fundamental (base) unit in the International System of Units (SI)?

Options

Option A

Metre

Option B

Ampere

Option C

Candela

Option D is correct

Newton

Explanation

The seven SI base units are metre (length), kilogram (mass), second (time), ampere (electric current), Kelvin (thermodynamic temperature), mole (amount of substance), and candela (luminous intensity). Newton is the SI derived unit for force, which is defined in terms of base units as kgms2\text{kg} \cdot \text{m} \cdot \text{s}^{-2}.