Which of the following statements is true about electrical circuits using series components?

In electrical circuits involving series components, one of the fundamental characteristics is that the current remains constant throughout each component. This means that the same amount of current flows through each resistor, capacitor, or other component connected in series.

When components are arranged in series, the total current entering the circuit flows through each subsequent component without any branching. As such, there isn't an opportunity for the current to split or change magnitude between components; the same current that leaves one component enters the next. This consistent behavior is a defining feature of series circuits, contrasting with parallel circuits where the current can divide among branches.

In series circuits, voltage divides among the components according to their resistances or impedances, hence it's incorrect to say the voltage is the same across each component. Summarily, the total resistance in a series circuit is the sum of the individual resistances, which results in a higher total resistance compared to any single component. Efficiency comparisons between series and parallel networks depend on several factors, including the specific application and desired outcomes, complicating the assertion that series circuits are generally more efficient.