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The potential difference between the ter...

The potential difference between the terminals of a cell in open circuit is 2.2 V. With resistance of `5 Omega` across the terminals of a cell, the terminal potential difference is 1.8 V. The internal resistance of the cell is

A

`7/12 Omega`

B

`12/7 Omega`

C

`9/10 Omega`

D

`10/9 Omega`.

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