Electronics Handbook/Components/Resistors/Series Configuration

Series Configuration
Two or more resistor can be connected in series to increase the total resistance. The Total Resistance is equal to the sum of all the resistor's resistance. The total resistance In Series connected circuit Current and voltage will be reduced
 * [[Image:Resistors_in_Series.svg|200px]]
 * $$R_{eq}=R_1+R_2+R_3+...+R_n \,$$

When connect two resistors of the same resistance the total resistance is doubled
 * R + R = 2R