Obtain an expression for the equivalent ...

Obtain an expression for the equivalent emf and internal resistance of two cells connected in parallel.

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Derive the expression for equivalent emf and equivalent internal resistance of two cells connected in series.

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If E_(1) , E_(2),E_(3) ... E_(n) represent emfs of a number of cells of internal resistances r_(1) , r_(2) , ... r_(n) then mention their equivalent emf and internal resistance when these are connected in series.

OSWAAL PUBLICATION-2018 Solved Paper 4-Exercise

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