All of the following are true regarding alternating current EXCEPT:

Alternating current (AC) is characterized by its ability to periodically reverse direction, which is a fundamental property distinguishing it from direct current (DC). The primary source of AC power is generators that convert mechanical energy into electrical energy, often through the movement of coils within a magnetic field.

In contrast, batteries produce direct current, which flows in a single direction. Since batteries are designed to provide a constant voltage (direct current), they do not generate alternating current. Thus, the statement indicating that alternating current is produced by batteries is incorrect, making it the exception among the provided options.

The other statements about alternating current being used to transport electricity over land and to supply electricity to homes are indeed true, as AC is widely utilized in power distribution systems for its efficiency over long distances.