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F=eE-----1
F=ma-----2
eE=ma
(or)
a=ae/m---3
a=Vd /tau---4
eE/m=Vd/tau
(or)
Vd=eEtau/m---5
J=neVd-----6
J=ne.eEtau/m
J=ne2Etau/m----7
if ne2tau/m=sigma in eq 7
J=sigmaE----8
here sigma=ne2tau/m
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∙ 11y ago
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