Which of the following correctly identifies the characteristic of charges in circuits?

The characteristic of charges in circuits being that they flow uniformly is fundamental to understanding electrical current. In a completed circuit, electric charges, typically electrons, move in a steady stream from the negative terminal of the power source to the positive terminal. This flow is driven by the potential difference created by the voltage source, allowing charges to travel in a continuous manner through conductors, such as wires, and through various components, including resistors and loads.

The uniform flow of charges implies that the current is consistent throughout the circuit, barring any interruptions or changes in circuit conditions. This uniformity is crucial for ensuring that devices operate as intended and receive the appropriate amount of current for their function. The concept of uniform flow contrasts with other options that describe charge behavior inaccurately or in ways that do not apply to the steady state of a properly functioning circuit.