Question:
Which of the following statements is false?
Which of the following statements is false?
Show Hint
The balance condition P/Q = R/S is symmetric: interchanging the cell and galvanometer arms does not change it.
Updated On: Nov 11, 2026
- Kirchhoff's second law represents energy conservation.
- Wheatstone bridge is the most sensitive when all the four resistances are of the same order of magnitude.
- In a balanced wheatstone bridge if the cell and the galvanometer are exchanged, the null point is disturbed.
- A rheostat can be used as a potential divider.
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The Correct Option is C
Solution and Explanation
(1) Kirchhoff's loop (second) law expresses conservation of energy: true.
(2) The sensitivity of a Wheatstone bridge is greatest when all four resistances are comparable: true.
(3) The balance condition \(\frac{P}{Q}=\frac{R}{S}\) is the same when the battery and galvanometer are interchanged, so the null point is not disturbed: this statement is false.
(4) A rheostat connected with both fixed ends across the source and the output taken from the slider acts as a potential divider: true.
Answer: (3) In a balanced wheatstone bridge if the cell and the galvanometer are exchanged, the null point is disturbed.
(2) The sensitivity of a Wheatstone bridge is greatest when all four resistances are comparable: true.
(3) The balance condition \(\frac{P}{Q}=\frac{R}{S}\) is the same when the battery and galvanometer are interchanged, so the null point is not disturbed: this statement is false.
(4) A rheostat connected with both fixed ends across the source and the output taken from the slider acts as a potential divider: true.
Answer: (3) In a balanced wheatstone bridge if the cell and the galvanometer are exchanged, the null point is disturbed.
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