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Relating b/w relaxayion time&curret desity

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Relating b/w relaxayion time&curret desity

    • Posted by Rahul Singh 6 years, 9 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    H I T E S H 6 years, 9 months ago

    Let the volume of conductor =A*l No. Density of electrons =n Total no. of electron in conductor =nAl Charge on electron=e Total charge of all electrons in conductor =q=nAle I=q/t=nAle/t------(1) We know velocity =displacement/time Velocity =l(lengthof conductor) /time Time=l/velocity t=l/Vd Putting value of t in equation (1) I=nAleVd/l I=nAeVd-----(2) We know Vd=eET/m Putting in equation (2) I=nAe2ET/m

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