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# A potentiometer wire, which is 4 cm long is connected to the terminals of a battery of steady voltage A leclanche cell gives a nullpoint at 1 m if the length of the potentiometer wire be increased by 1 m, What is the new new position of the null point?

- 1.25 m
- 1.4 m
- 1.75 m
- 1.2 m

## The correct answer is: 1.25 m

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