Category Archives: Resistive Circuits

Solved problems in resistive circuits such as nodal analysis, mesh analysis, superposition, source transformation, Thevenin and Norton theorems and so on

Superposition Method - Circuit With Dependent Sources


Determine  I_x ,  I_y and  V_z using the superposition method.

Superposition - Circuit with dependent sources

Solution
I. Contribution of the  -2V voltage source:
We need to turn off the current source by replacing it with an open circuit. Recall that we do not turn off dependent sources. The resulting circuit is shown below.
Continue reading

Superposition Problem with Four Voltage and Current Sources


Determine  V_x and  I_x using the superposition method.
A circuit with four voltage and current sources to be solved by the superposition method
Solution
I. Contribution of the  -5V voltage source:

To find the contribution of the  -5V voltage source, other three sources should be turned off. The  3V voltage source should be replaced by short circuit. The current source should be replaced with open circuits, as shown below.
Continue reading

Nodal Analysis - Circuit with Dependent Voltage Source


Determine the power of each source after solving the circuit by the nodal analysis.
Nodal Analysis - Supernode - Dependent Voltage Source 1

Answers:  P_{I_x}=0.497W, P_{1A}=-1.806W, P_{2A}=4.254W, P_{3V}=-3.87W, and  P_{5V}=-3.552W


Solution

I. Identify all nodes in the circuit.
The circuit has 6 nodes as highlighted below.
Continue reading