Electrical Engineering XYZ MCQ on SI Unit of Heat with answer and brief explanatory exxplanation.
Unit of heat is:
- Calorie
- Joule
- kWh
- watt-sec
Correct answer: 1. Calorie
Explanation:
The unit of heat is the joule (J). Heat is a form of energy, and the joule is the standard unit for measuring energy in the International System of Units (SI). One joule is defined as the amount of energy transferred when a force of one newton acts on an object in the direction of the force’s motion over a distance of one meter.
While the calorie is also a unit of energy commonly used in the field of nutrition, it is not the standard SI unit.
The kilowatt-hour (kWh) is a unit of electrical energy, and the watt-second is a smaller unit of energy; both are not commonly used for heat measurement in the context of standard SI units.