The networks in parts (a) and (b) of Figure 2.23 show two resistors coupled in series and in parallel, respectively. We wish to find a general formula for the effective resistance of each network—that is, find Reff such that E = ReffI.
(a) Show that the effective resistance Reff of a network with two resistors coupled in series [Figure 2.23(a)] is given by Reff = R1 + R2
(b) Show that the effective resistance Reff of a network with two resistors coupled in parallel [Figure 2.23(b)] is given by
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