Which of the following describes a characteristic of a series circuit?

In a series circuit, the current flowing through each component is indeed the same. This characteristic is fundamental to series circuits, as the circuit forms a single path for the flow of electricity. Since there is only one path for the current to take, it must remain consistent throughout all the components connected in the series.

Voltage is not constant across components in a series circuit; rather, it is divided among them based on their resistances. Each component receives a portion of the total voltage, which is not the case with series circuits where current remains uniform.

In addition, if components are on separate paths, this structure would represent a parallel circuit, where each component can have independent voltage paths. Lastly, a series circuit functions with just one power source, making the suggestion that it requires more than one power source inaccurate when discussing its characteristics.

Understanding that the current remains the same throughout all components is crucial when analyzing series circuits, as it allows for predictable behavior in terms of electrical current and helps in designing circuits effectively.