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A plausible reason for the increase in resistivity of most of the conductors with temperature is:

Correct answer: D. The time between collisions changes with temperature

  • A. The mass of the electron changes with temperature
  • B. The charge on each electron changes with temperature
  • C. The electron density changes with temperature
  • D. The time between collisions changes with temperature

Explanation

This option is plausible. In conductors, the resistivity is often influenced by the scattering of electrons as they move through the material. As temperature increases, the lattice vibrations (thermal motion of atoms) in the conductor also increase, leading to more frequent collisions between electrons and lattice ions. These collisions impede the flow of electrons, resulting in an increase in resistivity with temperature. Therefore, the time between collisions indeed changes with temperature, affecting the resistivity of the conductor.

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