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How Does the Resistance of a Pure Metal Change If Its Temperature Decreases? - Science

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प्रश्न

How does the resistance of a pure metal change if its temperature decreases?

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उत्तर

The resistance of all pure metals increases on raising the temperature and decreases on lowering the temperature. Therefore, the resistance of a pure metal will decrease on decreasing the temperature.

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पाठ 1: Electricity - Exercise 4

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संबंधित प्रश्‍न

Complete the following :-

(a)


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Find the equivalent resistance between points A and B.


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How does the resistance of a wire change when:

 its diameter is tripled? 

 


Give the law of combination of resistances in series.


Calculate the combined resistance in each case: 


State the order of resistivity of (i) a metal, (ii) a semiconductor and (iii) an insulator. 


State how are the two resistors joined with a battery when equivalent resistance is more than either of the two resistances. 


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(a) the resistance of the appliance and

(b) the safe limit of the current in it, while in use?


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