Question

The SI unit of heat energy is ______.

Options

• joule

• calorie

• kilo calorie

• Cal/g °C

• none of these

• Kcal/kg

Answer 1

The SI unit of heat energy is a joule.

Explanation:

The unit of heat in the SI system is the joule (J) and the calorie (cal) in the CGS measurement system. The heat required to raise the temperature of one kilogram of water by 1 °C from 14.5 °C to 15.5 °C is called one kilocalorie of heat.