NEET Exam > NEET Videos > Physics Class 12 > Classification: Conductors, Semiconductors & Insulators
Classification: Conductors, Semiconductors & Insulators Video Lecture | Physics Class 12 - NEET
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FAQs on Classification: Conductors, Semiconductors & Insulators Video Lecture - Physics Class 12 - NEET
| 1. What are conductors, semiconductors, and insulators? |  |
Ans. Conductors, semiconductors, and insulators are materials that differ in their ability to conduct electric current. Conductors allow the flow of electric charges easily, semiconductors have intermediate conductivity, and insulators prevent the flow of electric charges.
| 2. Give some examples of conductors, semiconductors, and insulators. | |
Ans. Examples of conductors include metals such as copper, silver, and aluminum. Semiconductors include materials like silicon and germanium. Insulators include rubber, plastic, glass, and wood.
| 3. How does the conductivity of conductors, semiconductors, and insulators differ? | |
Ans. Conductors have high conductivity, allowing electric charges to move freely. Semiconductors have moderate conductivity, which can be controlled by adding impurities or applying voltage. Insulators have very low conductivity, preventing the flow of electric charges.
| 4. What is the role of electrons in the conductivity of materials? | |
Ans. Electrons play a significant role in the conductivity of materials. In conductors, electrons are loosely bound to atoms and can move freely, allowing the flow of electric charges. In semiconductors, the movement of electrons can be controlled by manipulating their energy levels. In insulators, electrons are tightly bound to atoms, making it difficult for them to move.
| 5. How are conductors, semiconductors, and insulators used in practical applications? | |
Ans. Conductors are used in electrical wiring, circuits, and electronic devices to facilitate the flow of electricity. Semiconductors form the basis of modern electronics, including transistors and computer chips. Insulators are used in electrical insulation, protecting against electric shocks and preventing the loss of energy through conduction.
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Nov 16, 2024 Last updated |
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