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A wire is drawn into double its length a...

A wire is drawn into double its length and half its original cross-section. What will be change in its resistance and specific resistance?
Or.
A wire of resistivity `rho` is stretched to twice its length. What will be its new resistivity ?

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To solve the problem, we will analyze the changes in resistance and specific resistance when a wire is drawn into double its length and half its original cross-section. ### Step-by-Step Solution: 1. **Initial Parameters**: - Let the initial length of the wire be \( L \). - Let the initial cross-sectional area of the wire be \( A \). - The resistivity of the material is denoted as \( \rho \). ...
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MBD -HARYANA BOARD-CURRENT ELECTRICITY-OBJECTIVE TYPE QUESTIONS
  1. A wire is drawn into double its length and half its original cross-sec...

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  2. One kilowatt hour is equal to

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  3. The area of cross-section of a metal wire is doubled, keeping its leng...

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  4. With increse in temperature, the conductivity of a conductor

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  5. The potential difference applied to an X-ray tube is 5 kV and the curr...

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  6. The equivalent resistance between the points X and Y of the following ...

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  7. Calculate the amount of charge flowing in 2 minutes in a wire of resi...

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  8. When length of a metal wire is doubled and area of cross-section is re...

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  9. For series combination total resistance R will be:

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  10. The resistance between points A and C in the given figure is:

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  11. With increase in temperature, the resistivity of a conductor

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  12. When length of a metal wire is doubled and area of cross-section is re...

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  13. The S.I. unit of resistivity is

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  14. The effective resistance (in Omega) between P and R of letter A contai...

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  15. What is equivalent resistance between the points A and B of an infinit...

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  16. With the increase of temperature, the resistivity of a semiconductor

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  17. How does the resistance of a metallic wire depend on its temperature ?

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  18. Kirchhoff's first rule is based on ………

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  19. UNIT OF ELECTRIC CURRENT

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  20. The S.I. unit of resistance is

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  21. How much current is flowing through a 1kOmega resistor when a potentia...

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