This results in an increase in the number of collisions between the free electrons. The resistance of a conductor increases with an increase in temperature because the thermal velocity of the free electrons increases as the temperature increases.
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But in case of insulator there is a large energy gap between the two bands.
Why does the resistance of conductor rise with temperature. Although the resistance of a conductor changes with the size of the conductor eg. This may be expected to happen because as temperature. How does the resistance of an insulator change with temperature.
So if the temperature rise. How Temperature Changes Resistance. Thicker wires have less resistance to current flow than thinner wires the resistance of a conductor also changes with changing temperature.
If we raise the temperature of the metallic conductor the resistance will increase. So with increase in temperature the resistance of conductor increases.
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