DC Network Theorems Unit 2 – Kirchhoff's Current Law
Exercise 1 – Current in a Branch Circuit
EXERCISE OBJECTIVE
When you have completed this exercise, you will be able to calculate total and individual branch
currents in a two-element parallel circuit by using Kirchhoff's current law. You will verify your
results by measuring the circuit currents
DISCUSSION
- The sum of the branch currents in a parallel circuit is equal to the total current flowing
through the circuit. - In a two-element parallel circuit, Kirchhoff’s current law can be used to solve for an
unknown current when two of the three currents are know. - Kirchhoff’s current law applies to all parallel circuits.
- Ohm’s law is used to determine the resistance of each circuit branch (R= E/I).