ne^2 tau /m = 1/RA derivationHow this formula came?
Vasu , 7 Years ago
Grade 10
10 grade science> ne^2 tau /m = 1/RA derivationHow this for...
1 Answers
Mohammed Kasib Siddiqui
Last Activity: 6 Years ago
We know F= qE
for electrons-
F=eE
ma=eE
a=eE/m
v/t=eE/m (v=at) ( t= tau or relaxation time)
v= eE t/m
i/(nea)= eV t/ml (v= drift velocity) (E=V/l)
i/V=R= ml/(ne^2 t A)
If length of conductor is 1m then l=1
Hence..
ne^2t/m= 1/RA ans.
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