Physics - Current Electricity Question with Solution | TestHub
PhysicsCurrent ElectricityElectrical instrumentMedium2 minPYQ_2008
PhysicsMediumstatement
Statement In a Meter Bridge experiment, null point for an unknown resistance is measured. Now, the unknown resistance is put inside an enclosure maintained at a higher temperature. The null point can be obtained at the same point as before by decreasing the value of the standard resistance. Statement 2 : Resistance of a metal increase with increase in temperature.
Options:
Answer:
D
Solution:
With increase in temperature, the value of unknown resistance will increase. In balanced Wheatstone bridge condition, Here, value of standard resistance, value of unknown resistance . To take null point at same point or to remain unchanged, should also remain unchanged. Therefore, if is increasing should also increase. correct option is (d).
Stream:JEESubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument
⏱ 2mℹ️ Source: PYQ_2008
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