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14. Semicondutor electronics — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics14. Semicondutor electronics1 Mark
MCQ
As the temperature increases, the electrical resistance 
  • A
    decreases for both conductors and semiconductors
  • ✓
    increases for conductors but decreases for semiconductors
  • C
    decreases for conductors but increases for semiconductors
  • D
    increases for both conductors and semiconductors
✓

Answer

Correct option: B.
increases for conductors but decreases for semiconductors
b
For conductors $\alpha$ is $(+)ve$

For semiconductors and Insulators $\alpha$ is $(-)ve$

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