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Which of the following has negative temp...

Which of the following has negative temperature coefficient of resistance?

A

Iron

B

Coppoer

C

Gas

D

Gold

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AAKASH INSTITUTE-CURRENT ELECTRICITY-ASSIGNMENT(SECTION-A(OBJECTIVE TYPE QUESTIONS))
  1. In a platinum resistance thermometer resitance of the platinum wire at...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  16. Potential difference across AB in the circuit as shown in figure.

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  17. Potential difference across AB in the network shown is

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  18. emf of a chemical cell depends on

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  19. When current supplied by a cell to a circuit is 0.3 A, its terminal po...

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  20. Potential difference across AB in the network shown is

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