The resistivity of copper at 20ºC is 1.7 $\times$ 10^-8 $\Omega$ · m and the number of electrons per cubic centimeter is 8.47 $\times$ 10²².If you take the average speed of the electrons to be equal to their root-mean-square speed (at T = 300 K)of 1.17 $\times$ 10⁵ m/s,it follows that their mean free path,$\lambda$,must be A)1.23 nm B)1.86 nm C)2.35 nm D)2.89 nm E)None of these is correct.

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The Answer of The resistivity of copper at 20ºC is 1.7 $\times$ 10^-8 $\Omega$ · m and the number of electrons per cubic centimeter is 8.47 $\times$ 10²².If you take the average speed of the electrons to be equal to their root-mean-square speed (at T = 300 K)of 1.17 $\times$ 10⁵ m/s,it follows that their mean free path,$\lambda$,must be A)1.23 nm B)1.86 nm C)2.35 nm D)2.89 nm E)None of these is correct.

The Resistivity of Copper at 20ºC Is 1 ×\times× 10-8 Ω\OmegaΩ · M and the Number of Electrons Per Cubic Centimeter

The Resistivity of Copper at 20ºC Is 1 $\times$ 10^-8 $\Omega$ · M and the Number of Electrons Per Cubic Centimeter