Q. What is the purpose of keeping electronic devices such as computers, televisions, and remote controlled devices on Sleep mode? 
Answer: Reduce Power consumption
Notes: The purpose of keeping electronic devices on Sleep mode is to reduce power consumption. In Sleep mode, devices use importantly less energy while maintaining the current state, allowing for quick wake-up times. For example, a computer in Sleep mode can consume as little as 1-5 watts compared to 60-300 watts in active use. This not only saves energy but also extends the lifespan of the device.