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If 'n' is the number of free electrons i...

If 'n' is the number of free electrons in a metallic wire, then the resistance is proportional to

A

`n^2`

B

`n^1`

C

`n^(-2)`

D

`n^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
As, `R=(ml)/(n*e^2*tau*A)`
and speclific resistance = `m/(ne^2tau)`
`therefore" "Rprop1/n`
`rArr" "Rpropn^(-1)`
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