What typically happens in a series circuit when additional resistors are added?

In a series circuit, adding additional resistors increases the total resistance of the circuit. According to Ohm’s Law (V = IR), where V is voltage, I is current, and R is resistance, when the total resistance in a circuit increases while the voltage from the power source remains constant, the total current flowing through the circuit will decrease. This phenomenon occurs because the higher resistance restricts the flow of electrical current.

Understanding this principle is essential for circuit analysis. As more resistors are added in series, each resistor impedes the flow of current, leading to a lower overall current in the circuit. This knowledge is foundational for anyone working with electrical circuits, helping to predict how modifications in resistance will affect current and overall circuit behavior.