DC Network Theorems Unit 3 – Kirchhoff's Voltage Law
Exercise 2 – Algebraic Sum of Series Voltages
EXERCISE OBJECTIVE
When you have completed this exercise, you will be able to calculate the algebraic sum of
voltage drops by using a 3-element series circuit. You will verify your results with a multimeter.
DISCUSSION
- Kirchhoff’s voltage law states that the algebraic sum of the voltages in a closed loop equals
zero. - Negative and positive polarities must be assigned to the voltages when applying Kirchhoff’s
voltage law. - This method designates a negative sign to all voltage drops and a positive sign to all voltage
sources.