may continue to use a small amount of electricity while it remains plugged in. This can happen because the device needs power for features such as:
- Digital clocks or displays, such as those on microwaves and ovens.
- Remote-control sensors, such as those found on televisions and sound systems.
- External power adapters, sometimes called “wall warts,” such as those used with phones, laptops, and other electronics.
- Standby functions that allow a device to wake up quickly.
The Science Tip
A single modern phone charger may use very little electricity when it
