Two identical batteries of emf & = 13.6 V and internal resistance r = 0.1402 are to be connected to an external resistance R, either in parallel (see Figure (a)) or in series (see Figure (b)). 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? (a) W E 8 FW R E r R www (b) (a) Number i Units (b) Number i Units