Unlike a DC circuit schematic, a schematic of an AC circuit will have no?

In the context of AC circuit schematics, the absence of positive or negative signs is significant due to the nature of alternating current. Unlike direct current (DC), which flows in a single direction and thus has a designated positive and negative terminal, alternating current reverses its direction periodically. This means the voltage changes polarity, making the distinction of static positive or negative labels unnecessary and even misleading in terms of circuit depiction.

In AC circuit schematics, the components are often represented without these indications, allowing for a clearer representation of the alternating waveform and its behavior without being tied to a fixed polarity. This lack of positive or negative signs helps in focusing on the characteristics of AC signals, such as frequency and phase relationships, rather than on fixed voltage levels associated with DC circuits.

The other elements, such as ground symbols, common points, or termination points, are still applicable and important in AC circuits for various reasons, including safety and circuit connectivity.