There is a potentiometer wire of length ...

There is a potentiometer wire of length 1200 cm and 60 mA current is flowing in it. A battery of emf 5V and internal resistance of `20 ohm` is balanced on potentiometer wire with balancing length 1000 cm. The resistance of potentiometer wire is

`80 ohm`

`100 ohm`

`120 ohm`

`60 ohm`

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