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KCET2016PhysicsCurrent Electricity

Mobility of free electrons in a conductor is

Options

  1. Adirectly proportional to electron density.
  2. Bdirectly proportional to relaxation time.
  3. Cinversely proportional to electron density.
  4. Dinversely proportional to relaxation time,

Correct answer

B. directly proportional to relaxation time.

Step-by-step solution

Mobility of free electrons is given as = q m ( q and m are constants ) Thus, mobility of free electron in a conductor is directly proportional to relaxation time.

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