Question

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KCET 2015
Four identical cells of emf E and internal resistance
r are to be connected in series. Suppose if one of
the cell is connected wrongly, the equivalent emf
and effective internal resistance of the combination is
of
1) 4E and 4r
2) 4E and 2r
4) 2E and 2r
3) 2E and 4r​

Answer 1

Answer:

2

Explanation:

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Answer 2

Answer:

2E and 4r is the correct answer.