Question

Effect of temperature on electrical conductivity of metals

Answer 1

Explanation:

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.

Answer 2

Explanation:

Metals- Metals already contain free electrons and are good conductors of electricity. When we increase the temperature, the thermal velocities(velocity due to heat) of electrons increases and hence they collide more often with each other. In this way the “Resistance” increases