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Standard XII
Physics
Question

In insulators________. (C.B is conduction band and V.B is valence band)
  1. V.B. is partially filled with electrons
  2. C.B. is partially filled with electrons
  3. C.B. is filled with electrons and V.B. is empty
  4. C.B. is empty and V.B. is filled with electrons

A
V.B. is partially filled with electrons
B
C.B. is filled with electrons and V.B. is empty
C
C.B. is partially filled with electrons
D
C.B. is empty and V.B. is filled with electrons
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Solution
Verified by Toppr

As shown in the image, insulators have a very large forbidden gap. Their conduction band is empty, thus they cannot conduct electricity under normal room temperature and pressure conditions. The valence band is full.
500574_467378_ans.png

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