Two identical batteries of emf 12.0 V and internal resistance r 0.200 are to be
Chapter 27, Problem 40(choose chapter or problem)
Two identical batteries of emf 12.0 V and internal resistance r 0.200 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? If R r/2.00, what is i in the external resistance in the (d) parallel arrangement and (e) series arrangement? (f) For which arrangement is i greater now? + + r rRFigure 27-51 40.
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