A series combination of resistors involves a connection in which one end of a resistor connects to another end of the resistor and there is no other connection in between them.

## Circuit Diagram of Series Resistors

The figure below displays three resistors in series configuration:

## Formula to Solve Series Resistors

The total or equivalent resistance of series resistance can be calculated using the following formula:

R_{eq} = R_{1} + R_{2} + … + R_{n}

In case of three resistors:

R_{eq} = R_{1} + R_{2} + R_{3}

## Series Resistors Solved Examples

**Find the equivalent resistance of two resistors of 5 and 10 ohms connected in series.**

R_{eq} = R_{1} + R_{2} = 5 + 10 ohms = 15 ohms