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A lead resistance R is connected across ...

A lead resistance R is connected across a cell of emf E and internal resistance r. If the closed circuit p.d. across the terminals of the cell is V the internal resistance of the cell is.

A

`(E-V)R`

B

`(V-E)R`

C

`((E-V)/V)R`

D

`(E-V)/R`

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