For a Cell, the terminal potential diffe...

For a Cell, the terminal potential difference is 2.2 V when circuit is open and reduces to 1.8 V, when cell is connected to a resistance `R = 5Omega`. The internal resistance of cell (r ) is

`10//9 Omega`

`9//10Omega`

`11//9Omega`

`5//9Omega`

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