What distinguishes AC motors from DC motors?

The distinguishing factor between AC motors and DC motors lies primarily in the type of electrical current they utilize for operation. AC motors are designed to run on alternating current, which means the electric charge changes direction periodically. This allows for advantages such as easier voltage transformation and the ability to use lighter and less costly wiring over longer distances.

On the other hand, DC motors operate on direct current, where the electric charge flows in a single direction. This fundamental difference influences not only the design and operation of the motors but also their applications in various industries.

Additionally, while AC motors can be more efficient in many applications due to their capacity to handle variable loads and their simplified design with fewer parts, the correct answer focuses on the operational characteristics of the currents involved. Thus, it's clear that AC motors function with alternating current, distinguishing them significantly from DC motors.