define battery.how are overall emf of battery related to emf of the cells when connected in series
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Battery is the combination of two or more cell
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The overall emf of the battery is the algebraic sum of all individual cells connected in series. Similarly, if r1, r2, r3 are the internal resistances of individual cells, then the internal resistance of the battery will be equal to the sum of the internal resistance of the individual cells.
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