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AIIMS 2016
Exam
AIIMS
Year
2016
Subject
Physics
Chapter
Current Electricity

AIIMS 2016 · Physics · Current Electricity

On increasing the temperature of a conductor, its resistance...

On increasing the temperature of a conductor, its resistance increases because the

Options

  1. Arelaxation time increases
  2. Belectron density decreases
  3. Crelaxation time decreases
  4. Drelaxation time remains constant

Correct answer

C. relaxation time decreases

Step-by-step solution

Resistance of a conductor, R=mne2τlAR=\frac{m}{n e^2 \tau} \frac{l}{A} where the symbols have their usual meaning. As the temperature increases, the relaxation time τ\tau decreases.
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