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AP EAMCET202120 Aug 2021Evening ShiftPhysicsCurrent ElectricityActual

The conductivity of a conductor decreases with temperature because, on heating:

Options

  1. AAtoms vibrates vigorously
  2. BConductor expands
  3. CElectrons gain energy
  4. DElectrons vibrate vigorously

Correct answer

C. Electrons gain energy

Step-by-step solution

In metals, conductivity is due to movement of free electrons. When temperature increases, the vibration of metal ions increases. This results in increase in resistance of metal and hence, decrease in conductivity.

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