Transcript Example 4.2 Using the Node-Voltage Method

Example 4.2
Using the Node-Voltage Method
• Use the node-voltage method of circuit
analysis to find the branch currents in the
circuit shown
Determine the number of essential nodes
• There are two essential nodes. Thus there will
be one node-voltage equation.
• Identify the nodes as “ground” and “1”.
Identify the currents “out of the node(s)”
Write the node-voltage equation and solve for v1.
v1  50 v1 v1
  3  0
5
10 40
v1  40V
Solve for the branch currents
+40V
50  40
ia 
 2A
5
40
ib 
 4A
10
40
ic 
 1A
40
•Find the power associated with each
source, and state whether the source is
delivering power or absorbing power.