(A) Energy
(B) Joule
(C) Joule
(D) None of these
🧠 Explanation:
The SI unit of energy is the **joule (J)**. It is defined as the amount of work done when a force of one newton moves an object a distance of one meter in the direction of the force. One joule is also equivalent to one watt-second, representing the energy transferred when one watt of power is used for one second. This unit is widely used in physics, engineering, and everyday applications to measure various forms of energy, including kinetic, potential, electrical, and thermal energy. The joule provides a standardized way to quantify and compare energy across different scientific and practical contexts.
