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Using the concept of drift velocity of c...

Using the concept of drift velocity of charge carries in a conductor, deduce the relationship between current density and resistivity of the conductor ?

Text Solution

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By the concept of Drift velocity
`I=n Aeu_(d)`
`u_(d)=(eE)/(m)tau`
`rho=(m)/("ne"^(2)tau)`
`:.` Current density
`J=(I)/(A)=(nAeV_(d))/(A)="ne"*(e m tau)/(m)=(("ne"^(2)tau)/(A))E`
`J=(1)/(rho)*E`
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