Two materials, Ag and GaAs, are cooled from 300K to 60K. What will be

1.	Two materials, Ag and GaAs, are cooled from 300K to 60K. What will be the effect on the resistivity?
Answer» (i) In case of conductor Ag, the resistivity decreases with the fall of temperature from 300K to 60K. (ii) In case of semiconductor (or their alloys GaAs) the resistivity increases with the fall of temperature from 300K to 60K.

Two materials, Ag and GaAs, are cooled from 300K to 60K. What will be the effect on the resistivity?

Answer»

(i) In case of conductor Ag, the resistivity decreases with the fall of temperature from 300K to 60K.

(ii) In case of semiconductor (or their alloys GaAs) the resistivity increases with the fall of temperature from 300K to 60K.

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Two materials, Ag and GaAs, are cooled from 300K to 60K. What will be the effect on the resistivity?

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