BASIC DC CIRCUIT CALCULATIONSBasic DC TheoryFigure 18 Resistance in a Series CircuitThe total voltage across a series circuit is equal to the sum of the voltages across each resistorin the circuit (Figure 19) as shown in equation (2-4).V_{T}= V_{1} + V_{2} + V_{3} ... etc. (2-4)whereV_{T}= total voltageV_{1}= voltage across R_{1}V_{2}= voltage across R_{2}V_{3}= voltage across R_{3}ES-02 Page 24 Rev. 0