Recall that 1 watt is equivalent to 1 joule per second.

Power is defined as the rate at which energy is transferred or work is done. One watt (W) is equivalent to one joule (J) per second (s), which means that if a device operates at one watt, it transfers one joule of energy every second. This relationship highlights how power quantifies the efficiency and speed of energy transfer in various systems. Understanding this concept is essential for comparing the performance of different devices, as two devices can transfer the same amount of energy but have different power ratings based on how quickly they do so.