Interpretation:
Change in electrical resistance with increase in temperature differs in semiconductor and metallic conductor has to be explained.
Concept Introduction:
Semiconductors are the substances that have electrical conductivity between conductors and insulators such as materials of silicon and germanium.
Valence band contains valence electrons of atom and these electrons jumps to conduction band when excited. Conduction band is the band of high energy and generally has no free electrons and is empty. Electrons get excited to this band and move freely and conduct electricity.
Metallic conductors are those that cause
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