Deploy nodal analysis method to solve the circuit and find the power of the dependent source.
Solution
I. Identify all nodes in the circuit. Call the number of nodes 
.
The circuit has 4 nodes:
Therefore, 
.
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Determine the power of each source.
a)
b)
Solution
a) The current source keeps the current of the loop 
and the voltage source keeps the voltage across the current source 
as shown below.
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Solve the circuit using nodal analysis and find the power of 
.
Solution
a) Choose a reference node, label the voltages:
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Determine the resistance of the resistor, 
and 
.
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Determine the power absorbed by the resistors, the conductance of the resistors and 
.
Find the power of each element. Which one is supplying power and which one is absorbing it?
Solution
a) Passive sign convention, 
supplying power.
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