The energy band gap in insulator is:
Correct answer: B. Very high
- A. Zero
- B. Very high
- C. Narrow
- D. Infinite
Explanation
Insulators are characterized by a very large or high energy band gap(typically >3eV).This large gap makes it extremely difficult for electrons in the valence band to gain enough energy to jump to conduction band.
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About Physics of Solids
Solids are compared through crystal structure, amorphous arrangement, elasticity, plastic deformation, stress, strain and Young’s modulus. Electrical behavior depends on available charge carriers and band structure, so conductors, insulators and semiconductors must be distinguished from mechanical properties such as strength, stiffness and brittleness.
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