KCET · Physics · Current Electricity
Mobility of free electrons in a conductor is
- A directly proportional to electron density.
- B directly proportional to relaxation time.
- C inversely proportional to electron density.
- D inversely proportional to relaxation time,
Answer & Solution
Correct Answer
(B) directly proportional to relaxation time.
Step-by-step Solution
Detailed explanation
Mobility of free electrons is given as
\(\mu=\frac{q \tau}{m}\)
\(\Rightarrow \mu \propto \tau(\because q\) and \(m\) are constants )
Thus, mobility of free electron in a conductor is directly proportional to relaxation time.
\(\mu=\frac{q \tau}{m}\)
\(\Rightarrow \mu \propto \tau(\because q\) and \(m\) are constants )
Thus, mobility of free electron in a conductor is directly proportional to relaxation time.
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