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What will be the change in the resistivi...

What will be the change in the resistivity of a resistance wire. When its length is doubled by stretching it uniformly ?

A

Will be doubled

B

Will be half

C

Will be one- fourth

D

Will not change

Text Solution

Verified by Experts

The correct Answer is:
D
Will not change
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KUMAR PRAKASHAN-ELECTRICITY-OBJECTIVE QUESTIONS AND ANSWERS (Choose the correct option from those given below each question: )
  1. .Omegam. is the SI unit of …………….

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  2. I - V graph for a resistance Wire is shown in the figure given below:...

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  3. What will be the change in the resistivity of a resistance wire. When ...

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  4. Observe the circuit in,the following figure and select the correct sta...

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  5. Resistors with resistances 5 Omega, 10 Omega and 15 Omega are connecte...

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  6. The resistance of a wire is R. When this wire is stretched so that its...

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  7. When three resistors, each of resistance R, are connected in parallel,...

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  8. In the following figure, what will be the equivalent resistance betwee...

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  9. A wire having resistance 20 Omega is bent in the form of a circle as ...

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  10. Which of the following options is not the formula for heat energy (in ...

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  11. Which option is correct for the following statements A and B? State...

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  12. In which of the following circuits the voltmeter and ammeter are conne...

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  13. Maximum 1 A current can pass through a bulb haVing resistance 100 Omeg...

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  14. Which of the following is not a unit of electric energy?

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  15. Of which physical quantity is the unit,.VA. ?

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  16. Which of the following circuit symbols is used to represent an electr...

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  17. The resistance of 300 m long wire with cross-sectional area 10^(-6)m^2...

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  18. What will be the equivalent resistance of the following circuit?

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  19. Three resistors of resistances 2 Omega, 3 Omega and 5 Omega are connec...

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  20. An electric iron of power 2 kW is used for 3 hours. At Rs 5 per unit, ...

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