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What is the temperature coefficient?...

What is the temperature coefficient?

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The ratio of the change in resistivity per `1^@`C rise in temperature to the resistivity at `0^@`C is called the temperature coefficient of resistivity. Its units are `(C^@)^(-1)` or `K^(-1)`
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE (VERY ANSWER QUESTIONS)
  1. On what factors does the resistance of a conductor depend ?

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  2. The microbe used in the preparation of butyric acid ,is

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  3. What is the temperature coefficient?

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  4. Is Ohm's law a fundamental law?

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  5. What is a primary cell? Give an example.

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  6. What is the terminal voltage of a cell ? When it will be equal to the ...

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  7. When a cell is charged by sending current into the cell, what will be ...

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  8. What are good conductors? Give examples.

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  9. Which of the two, namely voltmeter and potentiometer is preferable to ...

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  10. Define kilowatt hour.How is it reltated to joule?

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  11. On what conservation principles the first and the second laws of Kirch...

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  12. What is the advantage of a meter bridge over a Wheatstone bridge?

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  13. What is the principle of potentiometer?

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  14. When is the series combination of cells advantageous and why?

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  15. When is the parallel combination of cells advantageous and why?

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  16. What are the advantages of using a potentiometer?

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  17. "Electrons alone are the current carriers in conductors". Explain whet...

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  18. What conclusion can you draw from the following observation on a resis...

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  19. A steady current flows in a metallic conductor of non-uniform cross-se...

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  20. Is Ohm's law universally applicable for all condcuting elements? If no...

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