Published by:
CGP EDU Academic Team
Published on: September 13, 2026
NUMERIC RESPONSE
A pure germanium plate of area 
and of thickness 
is connected across a battery of potential 
. The amount of heat generated in plate in 
is 
. Given that, the concentration of carriers in germanium at room temperature is 
per cubic metre. The mobilities of electron and holes are 
and 
, respectively. The value of 
is
Text Solution
Verified by ExpertsThe correct answer is:
NUMERIC RESPONSE
(11.11) Conductivity of semiconductor is given by 
Since, it is an intrinsic semiconductor.
Current flowing,
where, 
From Eq. (i), we get
Now, heat produced,
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