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The appropriate material to be used in t...

The appropriate material to be used in the construction of resistance boxes out of the following is

A

copper

B

iron

C

manganin

D

aluminium

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MODERN PUBLICATION-TEXTUAL QUESTIONS-EXERCISE
  1. A certain piece of copper is to be shaped into a wire of minimum resis...

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  2. A uniform wire of resistance R is uniformly compressed along it s leng...

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  3. The appropriate material to be used in the construction of resistance ...

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  4. Why are alloys used for making standard resistance coils?

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  5. If the resistivity of an alloy is rho' and that of constituent metals ...

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  6. Carbon resistor used in electronic circuit are marked for their resist...

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  7. When a current flows in a conductor, the order of magnitude of drift v...

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  8. The ratio of drift velocity to that of the thermal velocity of an elec...

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  9. Assume that each atom in a copper wire contributes one free electron. ...

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  10. Resistance of a conductor increases with the rise of temperature, beca...

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  11. A piece of germanium and another of copper are stated to experience a ...

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  12. The resistance of a conductor of a conductor is 5Omega at 50^@C, and ...

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  16. A 500 W heating unit is designed to operate from a 115 V line. If the ...

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  17. If R1 and R2 are respectively the filament resistances of a 200 W bulb...

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  19. The product of volt and coulomb is joule. (ii) The produce of volt and...

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  20. Two heating coils, one of fine wire and the other of thick wire of the...

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