A current `i` is flowing through the wire of diameter (d) having drift velocity of electrons `v_(d)` in it. What will be new drift velocity when diame

Question

A current `i` is flowing through the wire of diameter (d) having drift velocity of electrons `v_(d)` in it. What will be new drift velocity when diame

A current `i` is flowing through the wire of diameter (d) having drift velocity of electrons `v_(d)` in it. What will be new drift velocity when diameter of wire is made `d//4`?
A. `4v_(d)`
B. `v_(d)/4`
C. `16v_(d)`
D. `v_(d)/16`

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - C
`therefore` Current, `I=nAev_(d)` or `V_(d) propto 1/A`
If diameter of wire is `d/4`, then area will be `A/16`, so new drift velocity = 16v_(d)`.

5 views Answered 2023-02-05 15:29