Solid State Question 72
Question: Which of the following represents correct order of conductivity in solids-
Options:
A) $ {\kappa _{metals}}»{\kappa _{insulators}}<{\kappa _{semiconductors}} $
B) $ {\kappa _{metals}}«{\kappa _{insulators}}<{\kappa _{semiconductors}} $
C) $ {\kappa _{metals}};{\kappa _{semiconductors}}<{\kappa _{insulators}}=zero $
D) $ {\kappa _{metals}}<{\kappa _{semiconductors}}>{\kappa _{insulators}}\ne zero $
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Answer:
Correct Answer: A
Solution:
[a] Conductivity of metals are much higher than the semiconductors and insulators. Insulators are non - conductor of electricity. Thus, the order of conductivities of solids is $ {\kappa _{metals}}»{\kappa _{insulator}}<{\kappa _{semiconductors}} $
BETA
