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The microbe used in the preparation of b...

The microbe used in the preparation of butyric acid ,is

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For manganin temperature coefficient of resistance `(alpha)` is very very small. So change in resistance of the manganin wire with temperature is almost negligible. So it is used to prepare standard resistance.
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE (VERY ANSWER QUESTIONS)
  1. The conductance (G) is

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  2. On what factors does the resistance of a conductor depend ?

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

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  4. What is the temperature coefficient?

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  5. Is Ohm's law a fundamental law?

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

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

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

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  9. What are good conductors? Give examples.

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

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

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

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

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  14. What is the principle of potentiometer?

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

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

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  17. What are the advantages of using a potentiometer?

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

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

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

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