The mean free path of conduction electrons in copper is about 4 x 10¯⁸ m. For a copper block, find the electric field which can give, on an average, 1 eV energy to a conduction electron

The mean free path of conduction electrons in copper is about 4 x 10¯

1.	The mean free path of conduction electrons in copper is about 4 x 10¯⁸ m. For a copper block, find the electric field which can give, on an average, 1 eV energy to a conduction electron
A.	2.62 x 10⁷ V/m
B.	2.64 x 10⁷ V/m
C.	2.5 x 10⁷ V/m
D.	2.58 x 10⁷ V/m
Answer» D. 2.58 x 10⁷ V/m