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Distinguish between resistance and speci...

Distinguish between resistance and specific resistance.

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Distinguish between resistance and specific resistance.
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Explore conceptually related problems

(a) Define resistivity. Write an expression for the resistivity of a substance. Give the meaning of each symbol which occurs in it. (b) State the SI unit of resistivity. (c) Distinguish between resistance and resistivity. (d) Name two factors on which the resistivity of a substance depends and two factors on which it does not depend. (e) The resistance of a metal wire of length 1m is 26 Omega at 20^(@)C . if the diameter of the wire is 0.3mm, what will be the resistivity of the metal at that temperature?

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 ?

The unit of specific resistance is

The unit of specific resistance is

The dimensions of specific resistance are

S.I. unit of specific resistance is

A conductor of length l and area of cross-section A has a resistance R then its specific resistance is

MBD -HARYANA BOARD-CURRENT ELECTRICITY-OBJECTIVE TYPE QUESTIONS
  1. Distinguish between resistance and specific resistance.

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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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