What is the series resistance equation?

The series resistance equation is used to determine the total resistance in a circuit where resistors are connected in series. When resistors are arranged in series, the total resistance, denoted as Rt, is the sum of all individual resistances. This means that to find the total resistance, you simply add the resistances of each resistor together.

In the case of three resistors, the formula Rt = R1 + R2 + R3 reflects this addition process, showing that you take the resistance of the first resistor (R1), add it to the resistance of the second resistor (R2), and then add the resistance of the third resistor (R3). This straightforward addition is crucial because in a series circuit, the same current flows through each resistor, leading to a cumulative effect on total resistance.

Understanding this concept is key in circuit analysis, as it allows for accurate calculations of total resistance, which in turn affects current and voltage across each component in the circuit. This comprehension facilitates effective troubleshooting and design of electrical systems.