When the band gap for a semiconductor is low

conductivity of that material is low

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conductivity of that material is high

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the resistance of that material is high

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none of the above

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Solution

The correct option is B conductivity of that material is high
When the band gap for a semiconductor is low, it means it is easy for the valance electrons to jump into conduction band i.e. less energy is required for the electrons to enter into conduction band. Hence, the resistance of the material is low and conductivity is high.

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