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Asked Jan 3, 2020
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Compare thermal conductivity and electrical conductivity.

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Expert Answer

Step 1

Metals are good electrical conductors because there are lots of the charges in them.

Usually the free charges are negative electrons, but in some metals they are positive holes.

Step 2

Metals are good thermal conductors. Suppose that metal has different temperatures at its ends. The electrons are moving slightly faster at the hot and slower at the cool end. So the faster electrons transmit heat energy to the cooler.

Step 3

So it has greater thermal conductivity. The thermal conductivity is directly p...

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Science

Physics

Heat Transfer

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