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Statement-1 : The temperature coefficien...

Statement-1 : The temperature coefficient of resistance is positive for metals and negative for p-type semiconductor.
Statement-2 : The effective charge carriers in metals are negatively charged whereas in p-type semiconductor, they are positively charged

A

carbon

B

silicon

C

germanium

D

aluminium

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The correct Answer is:
D
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NIKITA PUBLICATION-CURRENT ELECTRICITY-Multiple Choice Questions
  1. Which of the following I-V graph represents ohmic conductors?

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  2. The external diameter of a 5 metre long hollow tube is 10 cm and the t...

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  3. Statement-1 : The temperature coefficient of resistance is positive fo...

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  4. Which of the following has negative temperature coefficient of resista...

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  5. At a temperature of 0^(@)K, the germanium behaves as

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  6. When the temperature of a metallic conductor is increased, its resista...

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  7. Thermistors are usually, perpared from

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  8. Thermistor is

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  9. If temperature is increases, then relaxation time of electrons in meta...

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  10. Thermistors are usually, perpared from

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  11. A typical thermistor can easily measure a change in temperature of the...

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  12. The algebraic sum of currents at junction points in any electric circ...

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  13. The mathematical equation of Kirchhoff's current law is

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  14. Sigma IR=Sigma E is the mathematical equaiton of

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  15. Kirchhoff's current law is the law of conservation of

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  16. Kirchhoff's second law is based on law of conservation of

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  17. Kirchhoff's second law is based on law of conservation of

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  18. Kirchhoff's law are used to calculate the current in

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  19. A stready current i is flowing through a conductor of uniform cross-se...

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  20. The figure below shows current in a part of electric circuit. The curr...

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