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Four cells, each of elf E and internal r...

Four cells, each of elf E and internal resistance r, are connected in series across an external resistance R. By mistake one of the cells is connected in reverse. Then the current in the external circuit is

A

`(2E)/(4r+R)`

B

`(3E)/(4r+R)`

C

`(3E)/(3r+R)`

D

`(2E)/(3r+R)`

Text Solution

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The correct Answer is:
A
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