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Class 12 Physics Practice Test: Wheatstone Bridge
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Avg score: 64% • Most missed: “Which instrument is used as the null detector in the Wheatstone bridge?”

A Wheatstone bridge is an electrical circuit used to measure an unknown electrical resistance by balancing two legs of a bridge circuit, one leg of which includes the unknown component.

Class 12 Physics Practice Test: Wheatstone Bridge
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7 Questions

1. The values of resistances P, Q, R, and S of a Wheatstone bridge are 20, 15, 30, and 35 ohms respectively. Calculate the current passing through the battery of negligible resistance.
2. Identify the definition of sensitivity of a galvanometer from the following.
3. Which instrument is used as the null detector in the Wheatstone bridge?
4. The equation of a balanced Wheatstone bridge is PR = QS.
5. The equation of a balanced Wheatstone bridge is PR = QS.
6. In the Wheatstone bridge given below, what should be values of R1 and R2 so that the bridge is balanced?
7. Find the false statement.

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