Answers created by Wandeclayt M.
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A potentiometer consist of a wire of length 4 m and resistance 10 ohm. It is connected to a cell of emf 2 V . The potential difference per unit length of the wire will be?
1) 5 V/m
2) 2 V/m
3) 0.5 V/m
4) 10 V/m
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