Question

For metal conductors the electrical resistivity decreases with rise in temperature

Answer 1

Answer:

When temperature increases, the thermal speed of the electrons increases as well as, the amplitude of vibration of the positive ions inside the metal conductor also increase, about their mean positions. ... Thus the ions can move more freely. Thus the resistivity decreases with an increase in temperature in electrolytes.

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Answer 2

Answer:

1. special Metallic bonding in metals
2. as resistance increases the metal cames to red hot condition