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Physics
Mobility of free electrons in a conductor is
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Q. Mobility of free electrons in a conductor is
KCET
KCET 2016
Current Electricity
A
directly proportional to electron density.
21%
B
directly proportional to relaxation time.
55%
C
inversely proportional to electron density.
14%
D
inversely proportional to relaxation time.
11%
Solution:
Key Idea Electron mobility $\propto$ Drift velocity.
Mobility of free electrons in a conductor is directly proportional to relaxation time.
$\mu \propto \tau$