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In semiconductor if temperature increases resistance …

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In semiconductor if temperature increases resistance decreases while in conductor temperature increases resistance also increases . Why?

Posted by Saurabh Jaiswal 5 years, 11 months ago

CBSE > Class 12 > Physics

3 answers

Komal Kumar 5 years, 11 months ago

Because in conductor electrons donot require more energy for going in conductipn band from vvalenceband.this energy is obtained from increasing of temperature as from kinetic theory of molecules.tge excess energy dors tge wirk to perform joule effect which increase resistance while in semiconductor electrons require considerable energy for band jumping.thus here increasing pf temperature performs positive results and increase the energy of electron thus the resistance decrease

Mohit Sharma 5 years, 11 months ago

These are depends on relxatation time

Ayush Ahlawat 5 years, 11 months ago

Because in conductor temperature increses outermost electrons are free to move and energy lose

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