What devices typically use Alternating Current?

The correct answer highlights that refrigerators and air conditioners are devices that typically use alternating current (AC) to function. AC is commonly used in household appliances because it is efficient for transferring electricity over long distances and can easily be transformed to different voltages. Refrigerators and air conditioners are designed to operate on the AC power supplied by residential electrical systems, which allows them to effectively run their compressors and other components necessary for cooling.

In contrast, battery-powered gadgets predominantly operate on direct current (DC) provided by batteries, while solar-powered devices can utilize either AC or DC depending on the system design—often involving an inverter to convert DC from solar panels to AC for household use. Therefore, it’s incorrect to state that all devices, regardless of their power source or design, use alternating current. The specific mention of refrigerators and air conditioners reflects a clear understanding of which commonly used devices operate on AC.