A group of N identical batteries of emf and internal resistance r may be connected all in series (Fig. 27-80a) or all in paral
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Question
A group of N identical batteries of emf and internal
resistance r may be connected all in series (Fig. 27-80a) or all in
parallel (Fig. 27-80b) and then across a resistor R. Show that both
arrangements give the same current in R if R r.
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