In a series circuit, which statement is true about the flow of current?

In a series circuit, the flow of current is indeed constant throughout. This means that the same amount of current flows through every component in the circuit, from the power source through to each device connected in series. This is due to the nature of series circuits, where there is only one path for the current to travel. Therefore, the current remains unchanged as it moves through different components, regardless of the number of devices present.

Other options do not accurately reflect the behavior of current in a series circuit. For instance, in a parallel circuit, current can branch out unevenly among different paths, and variations in load can affect the total current drawn from the source. However, in a series configuration, those scenarios do not apply since the current is uniformly distributed across the series components. The effect of a specific load on current changes typically refers to more complex circuit arrangements rather than simple series circuitry.