Electronics and Communication Engineering - Exam Questions Papers - Discussion
Discussion Forum : Exam Questions Papers - Exam Paper 11 (Q.No. 1)
1.
The electric field of 2.5 x 107 V/m can give 1 eV energy to condition electron, then in a copper block what will be the mean free path of electron?
Answer: Option
Explanation:
The force on electron in eE. As the electron moves through distance d , the work done on it is eEd.
This is equal to energy transferred to electron.
∴ eEd = 1 eV
∴ d = 4 x 10-7m.
Discussion:
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