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Which of the following statements are t...

Which of the following statements are true for a metallic conductor ?

A

The electrical conductivity depends on the mass of atoms

B

The electrical conductivity decreases with rise in temperature

C

The current density depends upon the drift velocity of electronis

D

The electrical conductivity increases with increase in voltage across it

Text Solution

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The correct Answer is:
A, B, C
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RESNICK AND HALLIDAY-CURRENT AND RESISTANCE-Practice Questions (Single Corret Choice Type)
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  2. Which one of the following statements concerning the electric field in...

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  3. Wires A and B are identical except that each is made from a different ...

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  4. A conductor of area of cross-section. A having charge carries, each ha...

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  5. How does the resistivity of a metal wire change if either the number o...

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  6. The given figure represents a portion of a wire in a circuit. A curren...

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  7. Lengths and cross-sectional areas of four pieces of nichrome wire are ...

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  8. The insulated wiring in a house can safely carry a maximum current of ...

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  9. If the current in an electric bulb decreases by 0.5 %, the power in th...

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  10. When a 500-W electric and a 500-W heater operate at their rates voltag...

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  11. The charge flowing in a conductor varies with times as Q = at - bt^2. ...

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  12. E denotes electric field in a uniform conductor, I corresponding curre...

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  13. A voltmeter and an ammeter are joined, in series to an ideal cell, giv...

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  14. A current passes through a wire of nonuniform cross-section. Which of ...

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  15. A uniform wire of resistance R is slaped into a regular n-sided polygo...

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  16. A copper strip AB and an iron strip AC are joined at A. The junction A...

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  17. When no current is passed through a conductor,

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  18. Which of the following statements is/are correct?

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  19. Which one of the following statements is false?

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  20. Which of the following statements are true for a metallic conductor ?

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