Question

Show graph for resistivity v/s Temperature for a metallic conductor, semiconductor, insulator, alloy, superconductor ASAP.

Answer 1

Answer:

Superconductivity is a set of physical properties observed in certain materials where electrical resistance vanishes and magnetic flux fields are expelled from the material. Any material exhibiting these properties is a superconductor.

Answer 2

The graph for resistivity v/s Temperature for a metallic conductor, semiconductor, insulator, alloy, and superconductor can be explained by the following points:

• In the case of semiconductors as the temperature increases the electrons in the valence band get excited and get out of the conduction band.
• Thus, the conductance increases resulting in a decrease in resistance.
• As the temperature of the metallic conductor increases, the velocity of the electrons increases.
• It also increases in the amplitude of the vibration of metallic atoms.
• The resistivity of an insulator decreases with temperature. It also increases conductivity.
• Also, insulators exhibit a negative temperature coefficient of resistance.
• With the increase in temperature, the resistance of an alloy decreases.
• The resistivity of superconductor materials depends on the temperature, and the equation is given by ρt = ρ⁰ [1 + α (T – T⁰).

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