WBJEE · Chemistry · Solid State
Metallic conductors and semiconductors are heated separately. What are the changes with respect to conductivity?
- A increase, increase
- B decrease, decrease
- C increase, decrease
- D decrease, increase
Answer & Solution
Correct Answer
(D) decrease, increase
Step-by-step Solution
Detailed explanation
Hint : For Metallic Conductors, \(R \propto T\) ( \(R\) is the resistance) Hence conductivity decreases with increase of Temperature For semi-conductors, conductivity increases with rise of temperature due increase in number of electron-hole pairs.
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