Question

What is the SI unit of heat?

Options

• Calorie (cal)

• Kelvin (K)

• Joule (J)

• Erg

Answer 1

Joule (J)

Explanation:

The SI unit of heat is the Joule (J). While calorie and erg are other commonly used units (CGS unit of heat is erg), Joule is the standard SI unit for any form of energy, including heat.