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When a substance was heated, its conductivity was increased, what should it be out of the following?

When a substance was heated, its conductivity was increased, what should it be out of the following?

جب کسی مادے کو گرم کیا گیا تو ، اس کی چالکتا میں اضافہ کیا گیا تھا ، تو اسے مندرجہ ذیل میں سے کیا ہونا چاہئے؟
Explanation
  • In semiconductors, increasing temperature excites more electrons from the valence band to the conduction band, increasing conductivity.
  • In contrast, metals have decreasing conductivity with temperature due to increased electron scattering.