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What effect does heating have on metals (to be specific, on the electrical conductivity) ? And why does it have that effect?

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  • $\begingroup$ Could you be more specific what you want to know about that? $\endgroup$ – ACuriousMind Apr 30 '15 at 6:05
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    $\begingroup$ That list of effects would easily fill a full semester of solid state physics. You need to be a little more selective than that. $\endgroup$ – CuriousOne Apr 30 '15 at 8:24
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What effect [does] heating have on [the electrical conductivity of] metals?

Conductivity drops as temperature rises

See How Does Temperature Affect the Conductivity of a Conductor?

enter image description here
Note, this graph plots resistivity not conductivity, vs temperature.

Temperature obviously affects the thermal velocity of free electrons and this affects the rate of collisions. This affects drift velocity and hence current.

Obviously, sufficient heating to cause a change of phase would likely have a more dramatic effect on electrical conductivity.

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