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KCET2012PhysicsCurrent Electricity

Copper and Germanium are cooled from room temperature to 100 ~K . Then, the resistance of

Options

  1. Agermanium increases, copper increases
  2. Bgermanium decreases, copper increases
  3. Cgermanium decreases, copper decreases
  4. Dgermanium increases, copper decreases

Correct answer

D. germanium increases, copper decreases

Step-by-step solution

Resistance of conductor decreases while those of semiconductors increases on cooling.

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