Master the ASTB Mechanical Challenge 2026 – Get Ready to Power Up!

In a series circuit, the key characteristic is that the current flowing through each component is the same. This occurs because there is only one path for the current to flow, meaning that whatever current enters one component must also exit that component and continue through any subsequent components in the circuit.

While the voltage across each component may vary depending on its resistance, the overall current remains constant throughout the entire circuit. This is governed by Ohm’s Law, which states that the current is equal to voltage divided by resistance (I=V/R). Even as different resistors in the circuit drop different amounts of voltage, they all experience the same current.

This fundamental property of current remaining constant in a series circuit is critical for understanding how circuit elements interact with one another. Therefore, the characterization that is accurate and true in this scenario is that the current is constant throughout the entire series circuit.