Question

question: which of the following is not an si unit? answer options: select one of four watt hour ampere kelvin joule

Explanation:

To determine which is not an SI unit, we analyze each option:

• Ampere: SI unit of electric current.
• Kelvin: SI unit of temperature.
• Joule: SI unit of energy/work.
• Watt hour: A unit of energy (1 Watt hour = 3600 Joules) but not an SI base or derived unit in the standard SI system (SI units for energy is Joule, and Watt hour is a non - SI unit often used in practical energy measurements like electricity billing).

Answer:

A. Watt hour