a) computers and electronics
b) heating
c) cooling
d) lighting
Previous answer:
3. Stand-by power 鈥� energy consumed by appliances turned off but plugged in 鈥� accounts for how much of all US residential energy use?
c) 5 percent
The California Energy Commission notes that stand-by power consumes 5 percent of residential energy use in the US, and can cost the homeowner hundreds of dollars a year. "Don't think that just because you have a gas range it doesn't consume electricity. Many gas appliances have electronic transfomers and microchips and are being manufactured with electronic features such as digital clock displays, LEDs and soft-touch buttons," notes the commission's Consumer Energy Center.
