When two sirens are wired in series, what happens to the voltage?

When two sirens are wired in series, the voltage across the entire circuit is divided between the two sirens. Each siren will receive less voltage than if it were connected alone to the power source, as the total voltage is shared across the components. In a series circuit, the total resistance increases, which can lead to a drop in the overall voltage that each component sees, effectively making the voltage across each siren lower than the source voltage.

This principle stems from Ohm's Law and the fundamental characteristics of series circuits, where voltages are additive but are distributed across the components connected in the circuit. Thus, when two sirens are wired in series, the total voltage is divided among them, leading to a voltage drop across each individual siren.