Which of the following materials has the maximum energy gap?
Correct answer: A. Insulator
- A. Insulator
- B. Conductor
- C. Semiconductor
- D. Superconductor
Explanation
The correct answer is Insulator. Insulators have the largest energy gap among the given options, which prevents electrons from easily transitioning to the conduction band, thus inhibiting electrical conductivity. In contrast, conductors have either overlapping bands or very small energy gaps, allowing electrons to move freely. Semiconductors have a smaller energy gap than insulators, which can be overcome under certain conditions. Superconductors, when in their superconducting state, have negligible energy gaps, allowing for resistance-free electron flow.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Electrical Properties of Solids
Electrical properties of solids depend on their band structure, charge carriers and conductivity. The topic compares conductors, insulators and semiconductors, relates resistivity to temperature, and covers intrinsic and extrinsic semiconductors, donor and acceptor impurities, electron and hole conduction, and the formation of p-type and n-type materials.
Practise Physics of Solids
320 free Physics of Solids MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 11 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electrical Properties of Solids questions
Conductivity of a semiconductor material increases byI. increasing temperature.II. increasing the surface area.III. decreasing the density of charge carriers.IV. doping with small amounts of impurities.
In terms of energy band, semiconductor materials at room temperature do NOT have
The substance(s) in which the atoms do NOT form magnetic dipole is/ are calledI. ferromagneticII. paramagneticIII. diamagnetic
Which types of impurity is added to a semiconductor material so that it can provide holes?
Dark plastic handlers often used on kitchen utensils because:
Ferromagnetic means: