Answer: d) 75%
That's right, most of the energy needed to power your household electronic devices--such as VCRs, t.v.'s and microwaves--is used when those devices are actually turned off. According to the U.S. DOE, just 25% of the electricity goes towards powering the devices when they are on; the rest of the time those devices are drawing energy off the grid even if they aren't doing anything. This phenomenon is called phantom loads or vampire energy, and it is a deceptively significant problem. Using power strips and unplugging chargers when not in use can add up to significant energy savings.
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