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Ohm's law is not applicable for...

Ohm's law is not applicable for

A

vacuum tube devices

B

semiconductors

C

metals

D

both 'a' and 'b'

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The correct Answer is:
D
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NIKITA PUBLICATION-CURRENT ELECTRICITY-Multiple Choice Questions
  1. For the validity of Ohm's law, which of following quantity is constant...

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  2. If the physical state of the conductor remains unchanged then the curr...

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  3. Ohm's law is not applicable for

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  4. In a closed circuit, the e.m.f. and internal resistance of the generat...

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  5. Which of the following is mathematical equation of Ohm's law ?

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  6. An external resistance R is connected to a cell of internal resistance...

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  7. Ohm is the S.I. unit of

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  8. The reciprocal of resistance is

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  9. If a potential difference of 1 volt applied across the conductor cause...

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  10. S.I. unit of conductance is

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  11. The resistance of a conductor depends on its

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  12. The reciprocal of conductivity is called as

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  13. A conductor of length l and area of cross-section A has a resistance R...

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  14. The resistance of the material of unit length and unit area of cross s...

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  15. S.I. unit of specific resistance is

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  16. When the length and area of cross-section both are doubled, then its r...

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  17. The specific resistance of all metals is most affected by

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  18. If 'n' is the number of free electrons in a metallic wire, then the re...

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  19. The example of an ohmic conductor is

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  20. The example for non- ohm ice resistance is

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