Question:
Electrical conductivity of insulators is
Electrical conductivity of insulators is
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Insulators have a very large energy gap, so very few carriers are available.
Updated On: Oct 1, 2026
- exactly zero
- extremely large
- extremely small
- sometimes small and sometimes large
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The Correct Option is C
Solution and Explanation
Step 1: Band picture
In insulators the energy gap between the valence and the conduction band is large, so almost no electrons reach the conduction band.
Step 2: Result
Conductivity is extremely small, but not exactly zero. Option (C).
Final Answer:
Conductivity of insulators is extremely small. \[ \boxed{\text{(C)}\ \text{extremely small}} \]
In insulators the energy gap between the valence and the conduction band is large, so almost no electrons reach the conduction band.
Step 2: Result
Conductivity is extremely small, but not exactly zero. Option (C).
Final Answer:
Conductivity of insulators is extremely small. \[ \boxed{\text{(C)}\ \text{extremely small}} \]
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