Electronics Handbook/Components/Resistors/Series Connection

Resistor in series

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

$R_{eq}=R_1+R_2+R_3+...+R_n$

Two equal value Resistor in series

When connecting two resistors of the same resistance the total resistance is doubled

R + R = 2R