Which of the following rows identifies the type of electricity used to operate a battery-powered flashlight and a hair dryer, respectively?aFlashlight Hair DryerDirect current Static electricitybFlashlight Hair DryerDirect current Alternating currentcFlashlight Hair DryerAlternating current Static electricitydFlashlight Hair DryerAlternating current Direct current
Question
Which of the following rows identifies the type of electricity used to operate a battery-powered flashlight and a hair dryer, respectively?aFlashlight Hair DryerDirect current Static electricitybFlashlight Hair DryerDirect current Alternating currentcFlashlight Hair DryerAlternating current Static electricitydFlashlight Hair DryerAlternating current Direct current
Solution
The correct answer is:
bFlashlight Hair Dryer Direct current Alternating current
Explanation:
A battery-powered flashlight operates on direct current (DC). This is because batteries provide a constant voltage, which makes the current flow in one direction, hence the term direct current.
A hair dryer, on the other hand, operates on alternating current (AC). This is because it is typically plugged into a wall outlet, which supplies alternating current. Alternating current is used in most homes and businesses because it's more efficient and safer to transmit over long distances.
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