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A uniform copper wire carries a current ...

A uniform copper wire carries a current `i` amperes and has `p` carries per `meter^3`. The length of the wire is `l` metres and its cross-section area is `s` `meter^2.` If the charge on a carrier is `q` coluombs, the drift velocity in `ms^-1` is given by-

A

`i//varhi sq`

B

i/psq

C

psq/i

D

`i/ps varphi q`

Text Solution

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The correct Answer is:
B
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MOTION-CURRENT ELECTRICITY-EXERCISE -1 (OBJECTIVE PROBLEMS NEET)
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  2. An insulating pipe of cross-section area A contains an electrolyte whi...

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  3. A uniform copper wire carries a current i amperes and has p carries pe...

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  4. In the presence of an applied electric field (vecE) in a metallic con...

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  5. A wire has non-uniform cross-section as shown in fig. steady current f...

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  6. Specific resistance of a wire depends on its

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  7. If the electrical resistance of a typical substance suddenly drops to ...

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  8. The resistance of wire is 20 Omega. The wire is stretched to three tim...

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  9. The dimensions of a mangnin block are 1 cm xx 1 cm xx100 cm The electr...

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  10. Iron and silicon wires are heated form 30^(@)C to 50^(@)C. The correct...

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  11. When the resistance of copper wire is 0.1 Omega and the radius is 1mm,...

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  12. When a resistance wire is passed through a die the cross-section area ...

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  13. In the following diagram two parallelopiped A and B are of the same th...

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  14. A conductor with rectangular cross section has dimensions (axx2axx4a) ...

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  15. A piece of copper and another of germanium are cooled from room temper...

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  16. A cylindrical copper rod is reformed to twice its original length with...

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  17. The length of a conductor is halved. Its conductance will be

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  18. The current in a metallic conductor is plotted against voltage at two ...

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  19. Net resitance between X and Y is –

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  20. Net resitance between X and Y is –

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