Four identical cells of emf E and and internal resistancer are to be connected in series . Supposeif one of the cellis connectedwrongly , the equivalent emf and effective internal resistance of the combination is

Four identical cells of emf E and and internal resistancer are to be c

1.	Four identical cells of emf E and and internal resistancer are to be connected in series . Supposeif one of the cellis connectedwrongly , the equivalent emf and effective internal resistance of the combination is
Answer» 2E and 2r 2E and 4R 4E and 2r 4E and 4r Solution : If all are CONNECTED correctly, `E_("EFF")= 4E` `r_("eff")= 4r` Now `E_("eff") = 2E rArr r_("eff")= 4r`

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Four identical cells of emf E and and internal resistancer are to be connected in series . Supposeif one of the cellis connectedwrongly , the equivalent emf and effective internal resistance of the combination is

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