JEE PHYSICS MCQ: CURRENT ELECTRICITY

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Assertion (A)In a meter bridge experiment, null point for an unknown resistance is put inside an enclosure maintained at a higher temperature. The null point can be obtained at the same

{p}

as before by decreasing the value of the standard resistance.

Reason (R) Resistance of metal increases with increase in temperature.

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Correct option: D

If both Assertion and Reason are false.

The correct answer is D because both the assertion and the reason are false. Increasing the temperature of the unknown resistance will change the null point, and the resistance of a metal increases with temperature.

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