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Q#1
Semiconductor Physics
GATE EC 2025
MCQ
+2 marks
-0.66 marks
The electron mobility 
in a non-degenerate germanium semiconductor at 300 K is 
.
The electron diffusivity 
at 300 K (in 
, rounded off to the nearest integer) is 
_________.
(Consider the Boltzmann constant 
and the charge of an electron 
.)
26
98
38
10
Explanation:
Given: 
Hence, option (B) is correct.
Alternate Solution:
By Einstein's relation, 
Thermal Voltage
Given 
and 
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