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Which of the following statements is false? (a) In a balanced Wheatstone bridge, if the cell and the galvanometer are exchanged, the null point is disturbed (b) A rheostat can be used as a potential divider (c) Kirchhoff’s second law represents energy conservation (d) Wheatstone bridge is the most sensitive when all the four resistances are of the same order of magnitude

Which of the following statements is false?
(a) In a balanced Wheatstone bridge, if the cell and the galvanometer are exchanged, the null point is disturbed
(b) A rheostat can be used as a potential divider
(c) Kirchhoff’s second law represents energy conservation
(d) Wheatstone bridge is the most sensitive when all the four resistances are of the same order of magnitude

Grade:12th pass

1 Answers

Eshan
askIITians Faculty 2095 Points
5 years ago
Dear student,

Statement A is false since after exchange of cell and galvanometer in the Wheatstone bridge, the condition that\dfrac{R_1}{R_3}=\dfrac{R_2}{R_4}must be satisfied still holds true since in the eariler configuration\dfrac{R_1}{R_2}was equal to\dfrac{R_3}{R_4}.

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