4.8 The Node-Vottage Meihod Versus the l4esh-Current l,4ethod ,15 Conparing the Node-Voltage and Mesh-Current Methods fiDd rhe voltage ,, in rhe cjrcuit sho$n in Fig.4.33.Sotution At firsl glance, the node-voltage method tooksappealing, because we may define the unknownvoltage as a node voltage by choosing the lov/er ter- minal of the dependent curent source as the refer-ence node, The circuit has four essential nodes and two voltage-contmlled dependent sources, so the node-voltage method requires manipulation ofthree node-voltage equations and t\ro constraint equatiorN. Let's now turn to the mesh-current method for finding oo. The circuit contains three meshes, and we call use the leftmost one to calculate zr., If welet i. denote the leftmost mesh curent, then oo = 193 10ia. The presence of the two curentsources reduces the problem to manipulating a sin- gle supermesh
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