For which substance among the following, conductivity increases with…
2018
For which substance among the following, conductivity increases with temperature?
Answer: B. Germanium — Germanium is a semiconductor . In semiconductors, when temperature increases, more charge carriers (electrons and holes) are generated. As a result,…
- A.
Copper
- B.
Germanium
- C.
Silver
- D.
Iron
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Correct answer: B
Germanium is a semiconductor . In semiconductors, when temperature increases, more charge carriers (electrons and holes) are generated. As a result, electrical conductivity increases with temperature . In metals like copper, silver, and iron, conductivity decreases with temperature due to increased lattice vibrations.
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