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Explain the difference between conductors semiconductors and insulators?
Wiki User
∙ 11y ago
Metals are good conductors of electricity. Insulators are bad conductors of electricity. Similarly, semiconductor devices are partial conductors of electricity means their conductivity lies between conductors and insulators.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoConductors-Those substances which allow electricity to pass through them are
called Conductors.
Conditions to be a Conductor
- free electrons(solid)
- fluids have ability to dissociate into ionic form or to furnish free ions in their aqueous solution.
- eg-steel,iron,copper etc.
Insulators-Those substances which do not allow electricity to pass through them are called insulators.
Conditions to be an insulator
- They do not have free electrons.
- They do not have ability to furnish ions
- eg:-wood,plastic,glass etc
Semi-Conductors-These are those substances which partly allow electricity to pass through them.
Wiki User
∙ 10y agoSuperconductors have less resistance like wassup teehee
Wiki User
∙ 14y agoOh, for Pete sake! Go to class once-in-awhile!!
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Why does the free electron theory fail to predict the semiconducting properties of materials?
Drawbacks of Classical free electron theory:1. It is macroscopic theory2. This theory cannot explain the electron conductivity ofsemiconductors and insulators.3. Ferromagnetism cannot be explained by this theory.4. This theory cannot explain the Photoelectric effect, Comptoneffect and the Black Body radiation.5. The calculated value of specific heat of metals is not matchingwith the experimental value.6. At low temperature, Lorentz number is not a constant. But by12classical theory it is a constant.7. Dual nature cannot be explained.8. Atomic fine spectra cannot be explained.9. Classical theory states that all the free electrons will absorbenergy, but quantum theory states that only few electrons willabsorb energy
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the same way an insulator and a conductor will work with out the electron theory!
Why does the free electron theory fail to predict the semiconducting properties of materials?
Drawbacks of Classical free electron theory:1. It is macroscopic theory2. This theory cannot explain the electron conductivity ofsemiconductors and insulators.3. Ferromagnetism cannot be explained by this theory.4. This theory cannot explain the Photoelectric effect, Comptoneffect and the Black Body radiation.5. The calculated value of specific heat of metals is not matchingwith the experimental value.6. At low temperature, Lorentz number is not a constant. But by12classical theory it is a constant.7. Dual nature cannot be explained.8. Atomic fine spectra cannot be explained.9. Classical theory states that all the free electrons will absorbenergy, but quantum theory states that only few electrons willabsorb energy
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The insulators are on the left side of the periodic table, past the mettalloids. Their atoms just do not interact with electricity or heat.
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Metalloids when used is electronics are called semiconductors.
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silicon is less sensitive towards temperature.It costs low compared to germanium,
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