How does adding resistors in a series affect total resistance?

When resistors are added in series, the total resistance in the circuit increases. This is because, in a series circuit, the resistances simply add together. Each resistor opposes the flow of electric current, and when more resistors are connected in a series, the overall opposition to current flow increases.

The total resistance can be calculated by summing the values of all the resistors connected in series. For example, if you have three resistors with resistances of 2 ohms, 3 ohms, and 5 ohms, the total resistance in the circuit would be 2 + 3 + 5 = 10 ohms. This additive property ensures that as more resistors are added, the total resistance continues to grow, making it a straightforward relationship between resistors in series.

This concept is fundamental in understanding how circuits behave, influencing current flow and voltage drops across components, and is essential knowledge in the study of basic electrical principles.