CBSE 2024 · Region 1 · Set 2 · Q3 · 1 mark
A student is asked to connect four cells, each of emf E and internal resistance $\displaystyle r$, in series. But she/he connects one cell wrongly in series with the other cells. The equivalent emf and the equivalent internal resistance of the combination will be :
Official answer
From CBSE’s own marking scheme for this paper.
(B)
4E and 3r
Current ElectricityCells in Series and in ParallelApplymcqmedium
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CBSE Class 12 Physics past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.