Ciruit Ehmentsproblem. Choosing a good approach and the appropriate tools will usuallyreduce the numbei and complexity of equations to be solved. Example 2.10illustrates another application of Ohm\ law and Kirchhoff's laws to a cir-cuit with a dependent source. Example 2.11involves a muchmore compli-cated circuit, but with a careful choice of analysis tools, the analysjs isrelatively uncomplicated.Apptying ohm's Law and Kirchhoff's Laws to Find an Unknown Vottagea) Use Kirchhoff's laws and Ohm's law to find thevoltage ,r, asshown inFig.2.23.b) Show that your solution is consistent with theconstraint that the total power developed jn thecircuit equals the total power dissipated.2 AApplying Ohm's law to the 3 O resistor g.Ivesthe desired voltage:?)o : 3to - 3Vb) To computethe power delivered to the voltagesources, we use the power equation in the formp : ol. The powei delivered to the independentvolrage source lsp : (10x 1.67) : -16.7 W.The power delivered to the dependent voltagep = (3r"x-i") : (5)( 1) = -5 w.Both sourcesare developing power, and th€
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Trigraph, Kirchhoff's circuit laws, Kirchhoff, Solvingf, ower d eliveredt