STANDARD Physics Combination of Cells MCQ Question
In the series combination of n cells each cell having emf ε and internal resistance r. If three cells are wrongly connected, then total emf and internal resistance of this combination will be
nε, (nr − 3r)
(nε − 2ε), nr
(nε − 4ε), nr
(nε − 6ε), nr
Correct Answer
Detailed Explanation
Since due to wrong connection of each cell the total emf reduced to 2ε then for wrong connection of three cells the total emf will reduced to (nε − 6ε) whereas the total or equivalent resistance of cell combination will be nr.
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