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Four identical cells of emf epsilon and ...

Four identical cells of emf `epsilon` and internal resistance r are to be connected in series. Suppose, if one of the cell is connected wrongly, then the equivalent emf and effective internal resistance of the combination is

A

4E and 2r

B

2E and 2r

C

4E and 4r

D

2E and 4r

Text Solution

Verified by Experts

The correct Answer is:
D

`E_(eq) = E+ E - E +E = 2E`
`r_(eq) = 4r`
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