109. Here we denote the supply emf as V (understood to be in volts). The situation is much like that shown in Fig. 27-4, with rnow interpreted as the resistance of the transmission line and Rinterpreted as the resistance of the “consumer” (the reason the circuit has been turned on in the first place – to supply power to some resistive load R). From Eq. 27-4 and Eq. 26-27 (remembering that we are asked to find the power dissipated in the transmission line) we obtain 2lineVPrRr⎛⎞=⎜⎟+⎝⎠. Now ris considered constant, certainly, but what about R? The load will not be the same
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