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A good moderator should...

A good moderator should

A

Low resistivity

B

High metling point

C

Low sensitiveness to temperature

D

All of these

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AAKASH INSTITUTE-CURRENT ELECTRICITY-ASSIGNMENT(SECTION-A(OBJECTIVE TYPE QUESTIONS))
  1. What is the range of resistivity of metallic conductors?

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  2. Wire bond resistances used in resistance boxes are made up of

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  3. A good moderator should

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  4. In a carbon resistor the last band colour is missing. Its tolerance is

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  5. Temperature coefficient of resistance of a wire at 0^(@)C is 0.00125^(...

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  6. In a platinum resistance thermometer resitance of the platinum wire at...

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  7. Coefficient of linear expansion of material of resistor is alph. Its t...

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

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  9. Two bulbs B(1) and B(2) are used in a household circuit. B(1) glows br...

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  10. Two electric bulbs whose resistances are in the ratio of 1:2 are conne...

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  11. If two bulbs of power 60 W and 100 W respectively each rated 110 V...

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  12. Three bulbs B(1),B(2) and B(3) of equal resistance are connected as sh...

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  13. In a house, individual power of two elements are 10OW and 150 W . Effe...

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  14. How many 60 W bulbs may be safely run on 220 v using a 5 A fuse?

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  15. A cell of emf 16V and internal resistant 4 Omega can deliver maximum ...

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  16. A battery delivers equal power individually across 4 Omega and 16 Ome...

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  17. A heater boils certain amount of water in 15 minutes. Another heater b...

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  18. Minimum resistance obtained from two resistors 3Omega and 2 Omega is

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  19. A uniform wire os resistance 12 Omega is bent to form a circle. Effec...

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  20. A wire of resistance R is cut into ‘ n ’ equal parts. These parts are ...

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