What could be a potential issue if the ammeter is connected backward?

Connecting the ammeter backward can indeed lead to a situation where it displays incorrect readings. This is primarily because the ammeter is designed to measure current in a specific direction. When connected in reverse, the internal components, including the shunt resistor, may not function correctly, resulting in a misleading reading.

In some cases, particularly with analog meters, reversing connections could overload the ammeter or cause the needle to move beyond its limits. This can lead to mechanical failure or even permanent damage to the internal components.

While the other options touch on potential outcomes related to a backward connection, the direct relationship between incorrect setup and inaccurate readings highlights why recognizing and preventing such a connection is crucial in any circuitry work involving ammeters. It's essential for accurate current measurement and ensuring the continuity and health of the ammeter itself.