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GO Two identical batteries of emf ℰ = 12.0 V and internal resistance r = 0.200 Ω are to be connected to an external resistance R, either in parallel (Fig. 27-50) or in series (Fig. 27-51). If R = 2.00r, what is the current i in the external resistance in the (a) parallel and (b) series arrangements? (c) For which arrangement is i greater? It R = r/2.00, what is / in the external resistance in the (d) parallel arrangement and (e) series arrangement? (f) For which arrangement is i greater now?
Figure 27-50 Problems 39 and 40.
Figure 27-51Problem 40
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