# When 5 V potential difference is applied across a wire of length 0.1 m, the drift speed of electrons is 2.5 xx 10^(-4) ms ^(-1). If the electron den

42 views
in Physics
When 5 V potential difference is applied across a wire of length 0.1 m, the drift speed of electrons is 2.5 xx 10^(-4) ms ^(-1). If the electron density in the wire is  8 xx 10^(28) m^(-3), the resistivity of the material is close to :
A. 1.6xx10^(-8)Omegam
B. 1.6xx10^(-7)Omegam
C. 1.6xx10^(-6)Omegam
D. 1.6xx10^(-5)Omegam

by (73.0k points)