A desktop computer (Option B) typically uses AC (alternating current) to operate, as it is usually plugged into an AC power outlet. Most portable electronics like a car (C), portable media player (D), and flashlight (E) use DC (direct current) from batteries. Locomotive trains (A) can also use AC, but many also utilize DC depending on the design. However, in the context of typical consumer devices, the desktop computer is the most straightforward answer.
Which device uses AC current to operate?
A.
locomotive train
B.
desktop computer
C.
car
D.
portable media player
E.
flashlight
1 answer
1 answer