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Which of the following statements is false ?

1. Wheatstone bridge is the most sensitive when all the four resistances are of the same order of magnitude
2. In a balanced Wheatstone bridge if the cell and the galvanometer are exchanged, the null point is disturbed
3. A rheostat can be used as a potential divider
4. Kirchhoff’s second law represents energy conservation

Correct answer: In a balanced Wheatstone bridge if the cell and the galvanometer are exchanged, the null point is disturbed

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