Both batteries in Fig. 27-43a Fig.27-42 31. are ideal. Emf

Chapter 27, Problem 32

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Both batteries in Fig. 27-43a Fig.27-42 31. are ideal. Emf 'gj of battery 1 has a fixed value, but emf 'g2 of battery 2 can be varied between 1.0 V $ is + ;:: 'g2 R2 ~ 0 ;:l U (a) -is (b) 'g2 (V) and 10 V. The plots in Fig. 27-43b give the currents through the two batteries as a function of 'g2' The vertical scale is set by is = 0.20 A. You must decide which plot corresponds to which battery, but for both plots, a negative current occurs when the direction of the current through the battery is opposite the direction of that battery's emf. What are (a) emf 'gb (b) resistance Rb and (c) resistance R2 ?

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