What is the SI unit of energy?

Correct option is D

The correct answer is: (D) Joule

Explanation:

• The SI unit of energy is the joule (J).
• One joule is defined as the amount of energy used when a force of one newton moves an object one meter in the direction of the force.

Information Booster:

• Named after physicist James Prescott Joule.
• 1 Joule = 1 Newton × 1 meter (1 J = 1 N·m).
• Used to measure all forms of energy including kinetic, potential, thermal, and electrical energy.
• In electrical terms: 1 Joule = 1 Watt × 1 second.
• Calorie is a non-SI unit; 1 calorie ≈ 4.184 joules.

Additional Information:

• Kelvin: SI unit of temperature, not energy.
• Watt: SI unit of power (rate of energy transfer).
• Newton: SI unit of force.