DQ6B_solution - Discussion Question 6B P212 Week 6 Kirchoff's Law Analysis of a Resistor Network So we now have two methods for analyzing resistor

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Discussion Question 6B P212, Week 6 Kirchoff’s Law Analysis of a Resistor Network So we now have two methods for analyzing resistor networks. Which one should we use? (i) It depends on the particular problem, and (ii) often a mixture of methods is the best. In general, method 1 (successive combination of elements) is easier, but method 2 (Kirchoff’s Laws) is more powerful . .. and some circuits simply cannot be analyzed with method 1 alone. The circuit shown at right is a typical example: here we have three batteries and they prevent us from “collapsing” any of the resistors in groups, as none of them are in simple series or parallel combinations. Our only chance is to use Kirchoff’s Laws! Let all the resistors R i have resistance 10 Ω , and let the battery EMF’s be E 1 = 10 V, E 2 = 20 V, E 3 = 30 V. Your tasks are: (a) Find the current I 3 through resistor R3. 13 We begin by writing all currents in terms of I and I
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This note was uploaded on 01/26/2012 for the course TAM 210 taught by Professor Staff during the Fall '08 term at University of Illinois, Urbana Champaign.

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