The mean free path of conduction electrons in copper is about \( 4.0 \times 10^{-8} \mathrm{~m} ...
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0The mean free path of conduction electrons in copper is about \( 4.0 \times 10^{-8} \mathrm{~m} \). The electric field which can give on the average \( 2.4 \mathrm{eV} \) energy to conduction electron in copper block is \( a \times 10^{7} \mathrm{~V} \mathrm{~m}^{-1} \). What is the integer value of \( a \) ?
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