supernode dependent voltage source

Posted on Feb 6, 2014

The right top node is connected to two voltage sources and has three elements. All other nodes also have three elements. Hence, we select the right top node because by this selection, we already know the node voltages of two other nodes, i. e. the ones that the reference node is connected to them by voltage sources. All node voltages are determined

supernode dependent voltage source
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. Now, the power of voltage sources can be calculated from the node voltages. For each source, we need to find the voltage across the source as well as the current flowing through it to compute the power. . However, the comply with the passive voltage convention, the current should be entering from the positive terminal of the defined voltage as shown below. Therefore,

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