Use nodal analysis method to solve the circuit and find the power of the - resistor.

**Solution**

I. Identify all nodes in the circuit.

The circuit has 3 nodes as shown below.

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Use nodal analysis method to solve the circuit and find the power of the - resistor.

**Solution**

I. Identify all nodes in the circuit.

The circuit has 3 nodes as shown below.

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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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Solve the circuit with the nodal analysis and determine .

**Solution**

1) Identify all nodes in the circuit. Call the number of nodes .

There are five nodes in the circuit:

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Solve the circuit with nodal analysis and find and .

**Solution**

1) Identify all nodes in the circuit. Call the number of nodes .

There are four nodes in the circuit:

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Solve the circuit with the nodal analysis and determine and .

**Solution**

1) Identify all nodes in the circuit. Call the number of nodes .

The circuit has 5 nodes. Therefore, .

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**Reference Node**

In circuits, we usually label a node as the reference node also called ground and define the other node voltages with respect to this point. The reference node has a potential of by definition. The following symbol is used to indicate the reference node:

As mentioned, the selection of the reference node is arbitrary. However, a wise selection can make the solving easier. As a general rule, it is usually chosen to be

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