For a house hold wiring, copper alloy is used which has resistivity rho=1.7xx10^(-8)Omega-m and electron density n=8.49xx10^(28)m^(-3). If atomic spacing of copper is about 0.2 nm and an electron on an average travels about N xx100 atomic spacings between two collisions, then find N. Given average speed of free electrons of copperis about 1.6xx10^(6)m//s.

For a house hold wiring, copper alloy is used which has resistivity rh

1.	For a house hold wiring, copper alloy is used which has resistivity rho=1.7xx10^(-8)Omega-m and electron density n=8.49xx10^(28)m^(-3). If atomic spacing of copper is about 0.2 nm and an electron on an average travels about N xx100 atomic spacings between two collisions, then find N. Given average speed of free electrons of copperis about 1.6xx10^(6)m//s.
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