Question

Which is not true :
(A) Resistance of metals increases with increasing temperature
(B) Resistance of semi-conductors decreases with rise of temperature
(C) Resistance of an electrolyte increases with rise of temperature
(D) None of the above​

Answer 1

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A)

Answer 2

Answer:

(A) Resistance of metals increases with increasing temperature IS NOT TRUE.

Explanation:

When the temperature is increased, the atoms of the material vibrate and it makes the valence electrons present in the valence band to shift to the conduction band. When the conductivity of the material increases, it means that the resistivity decreases and so the current flow increases.

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