Which action is specifically aimed at preventing energy waste by devices not in use?

Which action is specifically aimed at preventing energy waste by devices not in use?

• A. Open windows to create airflow
• B. Unplug equipment at night
• C. Switch off lights in used rooms
• D. Dilute shampoos as needed

Answer: (B)

Unplugging equipment at night is the action that directly prevents energy waste from devices not in use. Many electrical devices still draw power even when they aren’t actively operating, a small amount known as standby or phantom power. By unplugging gear at the end of the day, you remove that unnecessary consumption entirely. Opening windows for airflow helps with ventilation and can lower cooling needs while in use, but it doesn’t stop standby power from idle devices. Switching off lights in used rooms saves energy during occupancy, yet it doesn’t address the idle energy drawn by plugged-in equipment. Diluting shampoos as needed has no impact on electrical energy use.

Unplugging equipment at night is the action that directly prevents energy waste from devices not in use. Many electrical devices still draw power even when they aren’t actively operating, a small amount known as standby or phantom power. By unplugging gear at the end of the day, you remove that unnecessary consumption entirely. Opening windows for airflow helps with ventilation and can lower cooling needs while in use, but it doesn’t stop standby power from idle devices. Switching off lights in used rooms saves energy during occupancy, yet it doesn’t address the idle energy drawn by plugged-in equipment. Diluting shampoos as needed has no impact on electrical energy use.