Q49 / 256 · NTA Abhyas (NEET) 2020 · Physics · Current Electricity

Mobility of free electrons in a conductor is

  • A
    Directly proportional to electron density
  • Correct answer
    B
    Directly proportional to relaxation time
  • C
    Inversely proportional to electron density
  • D
    Inversely proportional to relaxation time

Solution

Electron mobility ∝ Drift velocity.

Mobility of free electron in a conductor is directly proportional to relaxation time.

u∝τ

Hence, the correct answer is option: 'B'.

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