Which of the following is the SI unit of measurement for energy?

• A. volt
• B. joule
• C. newton
• D. watt

Answer: (B)

Verified step by step guidance

1. Understand that energy is a physical quantity that represents the capacity to do work or produce heat.
2. Recall that the SI unit system defines standard units for various physical quantities, including energy.
3. Identify the SI unit of energy by considering the relationship between energy, force, and distance: energy is work done, and work is force times distance.
4. Know that the SI unit of force is the newton (N), and distance is measured in meters (m), so energy (work) is measured in newton-meters (N·m).
5. Recognize that the newton-meter is defined as a joule (J), which is the SI unit of energy, while volt, newton, and watt represent other physical quantities.