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The arc of cross-section of a metallic c...

The arc of cross-section of a metallic conductor is halved. The drift vclocity of electron .......

A

is not affected.

B

becomes half.

C

becomes double.

D

none of the above

Text Solution

Verified by Experts

The correct Answer is:
A
is not affected.
`v_(d) = (Ee)/(m) .tau`
Hence drift velocity do not depend on area.
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KUMAR PRAKASHAN-CURRENT ELECTRICITY-SECTION [D] MULTIPLE CHOICE QUESTIONS (MCQs) (MCQs FROM .DARPAN. BASED ON TEXTBOOK)
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  2. Drift velocity of electrons is ....... .

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  3. The arc of cross-section of a metallic conductor is halved. The drift ...

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  5. Suppose drift velocity over the entire cross section of a wire is V (...

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  6. Cross-sectional area of silicon slab at 300 K temperature having lengt...

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  7. Drift velocity of electrons is ....... .

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  8. Mobility of electric charge mean., ...... per unit electric field.

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  9. Resistance of conductor increases with increase in temperature because...

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  10. There are three red coloured hands on a carbon resistor. What is its r...

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  11. On a carbon resistor there are bands of colours of our national flag f...

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  12. Which of the following is a unit of mobility ?

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  13. Kirchhoff's first and second law are based ...... .

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  14. When a battery is connected across a parallel combination of two unequ...

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  15. When a battery is connected across series connection of two unequal re...

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  16. When 10 resistors, each with resistance (1)/(10) Omega are connected i...

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  17. Resistance P, Q, R, S in the four sides of Whearstone bridge have resp...

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  18. Reading obtained in the ammeter and voltmeter would be ....and ..... .

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  19. What should be the value of unknown resistance R so that equivalent re...

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  20. In a given circuit, equivalent resistance between A and B = Omega.

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